The probability of a three of a kind in poker is approximately 1/50. Use the Poisson approximation to estimate the probability you will get at least one three of a kind if you play 20 hands of poker.

Answers

Answer 1

The probability of getting at least one three of a kind in 20 hands of poker, using the Poisson approximation, is approximately 0.3293 or about 32.93%.

What is probability?

Probability is a branch of mathematics that deals with the study of random events or processes. It is the measure of the likelihood that an event will occur, expressed as a number between 0 and 1, where 0 means that the event will not occur and 1 means that the event is certain to occur.

We can use the Poisson distribution to approximate the probability of getting at least one three of a kind in 20 hands of poker, given that the probability of a three of a kind is approximately 1/50.

Let λ be the expected number of three of a kinds in 20 hands. Then λ = np, where n is the number of hands (20) and p is the probability of a three of a kind (1/50).

λ = np = 20 * (1/50) = 0.4

Using the Poisson distribution, the probability of getting k three of a kinds in 20 hands is given by:

[tex]P(k) = (e^{(-\lambda)} * \lambda^k) / k![/tex]

The probability of getting at least one three of a kind in 20 hands is:

P(at least one three of a kind) = 1 - P(0 three of a kinds)

[tex]= 1 - (e^(-0.4) * 0.4^0) / 0!\\\\= 1 - e^(-0.4)[/tex]

≈ [tex]0.3293[/tex]

Therefore, the probability of getting at least one three of a kind in 20 hands of poker, using the Poisson approximation, is approximately 0.3293 or about 32.93%.

To learn more about probability visit:

https://brainly.com/question/24756209

#SPJ1


Related Questions

find the general solution of the given differential equation. y′ = 2y x2 9

Answers

The general solution of differential equation is, y = k * (x²-9).

We can begin by separating the variables of the differential equation:

y′ = (2y) / (x²-9)

y′ / y = 2 / (x²-9)

Now we can integrate both sides with respect to their respective variables:

[tex]\int \dfrac{y'}{y} dy = \int \dfrac{2}{x^2-9} dx[/tex]

ln|y| = ln|x²-9| + C

where C is the constant of integration.

Simplifying:

|y| = e^(ln|x²-9|+C) = e^C * |x²-9|

Since e^C is a positive constant, we can write:

y = k * (x²-9)

where k is a non-zero constant. Therefore, the general solution of the given differential equation is y = k(x²-9), where k is any non-zero constant.

To know more about differential equation, here

brainly.com/question/14620493

#SPJ4

--The complete question is, Find the general solution of the given differential equation. y′ = (2y) / (x²-9).--

Find the inverse of f(x) = (x - 5)/(x + 6)

Answers

Answer:

[tex]f^{-1}(x) = \dfrac{6x + 5}{1 - x}[/tex]

Step-by-step explanation:

To find the inverse of a function, we can swap x and y (f(x)), then solve for y, and represent that y as [tex]f^{-1}(x)[/tex].

[tex]f(x) = \dfrac{x - 5}{x + 6}[/tex]

↓ swapping x and y

[tex]x = \dfrac{y - 5}{y + 6}[/tex]

↓ multiplying both sides by (y + 6)

[tex]x(y + 6) = y - 5[/tex]

↓ simplifying using the distributive property

[tex]xy + 6x = y - 5[/tex]

↓ subtracting 6x and y from both sides to isolate the y terms

[tex]xy - y = - 6x - 5[/tex]

↓ undistributing y from the left side

[tex]y(x - 1) = - 6x - 5x[/tex]

↓ dividing both sides by (x - 1)

[tex]y = \dfrac{-6x - 5}{x-1}[/tex]

↓ (optional) multiplying the fraction by [tex]\bold{\dfrac{-1}{-1}}[/tex]

[tex]y = \dfrac{6x + 5}{1 - x}[/tex]

↓ replacing y with [tex]f^{-1}(x)[/tex]

[tex]\boxed{f^{-1}(x) = \dfrac{6x + 5}{1 - x}}[/tex]

If there are ten multiple-choice questions on an exam, each having three possible answers, how many different sequences of answers are there? There are 59049 different sequences of answers. (Type a whole number.)

Answers

Different sequence of answers is  59049.

Explanation: -  

To determine the number of different sequences of answers that can be created with ten multiple-choice questions, each having three possible answers, we need to use the multiplication principle of counting. This principle states that the total number of possible outcomes of a sequence of events is the product of the number of outcomes for each event.

For the first question, there are three possible answers. For the second question, there are three possible answers, and so on for each of the ten questions. Using the multiplication principle, we can determine the total number of different sequences of answers by multiplying the number of outcomes for each question together: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 = 59,049

Therefore, there are 59,049 different sequences of answers that can be created with ten multiple-choice questions, each having three possible answers.

Know more about the "multiplication principle" click here;

https://brainly.com/question/29117304

#SPJ11

PLS HELP I NEED TO GET TO BED 100 POINTS

Answers

To find the surface area, you add up the area of the lateral faces and the area of the bases. The area of the triangular bases is 10.5 inches squared, and the area of the lateral faces is (3.5 * 9) + (4.5 * 9) + (3 * 9) = 99 inches squared. 10.5 + 99 = 109.5 inches squared

The probability of a sunny day in July in the state of Virginia is 0.75. What is the probability of at least one cloudy day in a five-day span (assuming the days are independent)?

Answers

The probability of at least one cloudy day in a five-day span is 0.7627 or approximately 0.76.

How to find the probability of at least one cloudy day in a five-day span?

The probability of a sunny day in Virginia in July is 0.75, which means the probability of a cloudy day is 1 - 0.75 = 0.25.

Assuming the days are independent, the probability of at least one cloudy day in a five-day span can be calculated using the complement rule:

P(at least one cloudy day) = 1 - P(no cloudy days)

The probability of no cloudy days in a five-day span is the probability that all five days are sunny, which is [tex](0.75)^5[/tex] = 0.2373.

Therefore, the probability of at least one cloudy day in a five-day span is:

P(at least one cloudy day) = 1 - P(no cloudy days) = 1 - 0.2373 = 0.7627

So the probability of at least one cloudy day in a five-day span is 0.7627 or approximately 0.76.

Learn more about probability

brainly.com/question/29381779

#SPJ11

For a carnival game, a turn consists of spinning the spinner shown twice. If the product of the two numbers is odd, you win. If the product of the two numbers is even, you lose. In addition, if the product of the two numbers is prime, you win a grand prize. (see image). The game assistant assures you that the odds are in your favor because you are more likely to land on an odd number. Is it true you are more likely to win? Explain using probabilities.

Answers

The probability that you win is given as follows:

25/81.

Hence it is not true that you are more likely to win, as the probability of winning is less than 50%. Even tough there are more odd numbers than even number, you need two odd numbers for the product to generate an odd number.

How to calculate a probability?

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.

For the product of two numbers, we have that:

If the two numbers are odd, the product is odd.Otherwise, the product is even.

5(1, 3, 5, 7 and 9) out of the 9 numbers, are odd, hence the probability of choosing two odd numbers is given as follows;

5/9 x 5/9 = 25/81.

More can be learned about probability at brainly.com/question/24756209

#SPJ1

Solve for the surface area and volume of the composite figure made of a right cone and a
hemisphere (half sphere).

Answers

The surface area of the composite figure is 1,665.04 in².

The volume of composite figure is 1,079.66 in³.

What is the volume of the composite figure?

The volume  and surface area of the composite figure is calculated by applying the following formula as shown below;

The surface area = area of cone + area of hemisphere

S.A = πr(r + l) + 3πr²

S.A = π x 10 (10 + 13)  +  3π(10²)

S.A = 1,665.04 in²

The volume of composite figure is calculated as follows;

V = ¹/₃πr²h  +  ²/₃πr²

The height of the cone is calculated;

h = √(13² - 10²)

h = 8.31 in

V = ¹/₃π(10)²(8.31)  +  ²/₃π(10)²

V = 870.22 + 209.44

V = 1,079.66 in³

Learn more about volume of cone here: https://brainly.com/question/13677400

#SPJ1

There are 28 students in a class.
13 of the students are boys.
Two students from the class are chosen at random.
a) If the first person chosen is a boy, what is the probability that
the second person chosen is also a boy?
Give your answer as a fraction.
b) What is the probability that both students chosen are girls?
Give your answer as a fraction.
(1)
(1)

Answers

a)  If the first person chosen is a boy, what is the probability that

the second person chosen is also a boy is: 12/27

b) The probability that both students chosen are girls is: 5/18

How to find the probability of selection?

The parameters given are:

There are 28 students in a class

13 of the students are boys

According to the question we have

When first chosen a boy , then the rest is

28 - 1 = 27

Then the rest boys are 12

From 27, has 12 boys

The probability that the second person also is a boy = 12/27

b) There are:

28 - 13 = 15 girls

Probability that first is a girl = 15/28

Probability that second is a girl = 14/27

Thus:

P(both are girls) = (15/28) * (14/27) = 5/18

Read more about Probability of selection at: https://brainly.com/question/251701

#SPJ1

Given the set of integers: {88, 2,9, 36}, how many different MIN HEAPs can be made using these integers? Justify your answer.

Answers

After continuing this process recursively until all integers are placed in the MIN HEAP. Using this method, we can see that there is only one possible MIN HEAP that can be made using the given set of integers. Therefore, the answer of the Binary Tree is 1.

Given the set of integers {88, 2, 9, 36}, there are 3 different Min Heaps that can be made using these integers. Min Heap is a binary tree where the parent node has a value less than or equal to its child nodes.

To determine the number of different MIN HEAPs that can be made using the set of integers {88, 2, 9, 36}, we can use the formula for the number of distinct permutations of n elements, which is n!. However, we need to take into account that MIN HEAP has a specific structure where the parent node is always smaller than its children nodes.

Then, we can choose the next smallest integer (9 or 36) as the left child of 2, and the remaining integer as the right child of 2. We can continue this process recursively until all integers are placed in the MIN HEAP.

Here are the 3 different Min Heaps:

1.       2
      /     \
    9        36
  /
88

2.       2
      /     \
    88      9
  /
36

3.       2
      /     \
    36       9
  /
88

These Min Heaps satisfy the condition of having the parent nodes with smaller values than their child nodes.

Learn more about Binary Tree:

brainly.com/question/29993738

#SPJ11

In one flip of 10 unbiased coins, what is the probability of getting a result as extreme or more extreme than 8 heads?
a.0547
b.1094
c. 2246
d.Impossible to determine

Answers

The probability of getting a result as extreme or more extreme than 8 heads is 0.0547, which corresponds to answer choice (a).

The probability of getting a result as extreme or more extreme than 8 heads in one flip of 10 unbiased coins can be found using the binomial probability formula. We need to calculate the probability of getting exactly 8 heads, 9 heads, and 10 heads, then sum them up.

The binomial probability formula is: P(X=k) = C(n, k) × p^k × (1-p)^(n-k), where C(n, k) represents the number of combinations, n is the number of trials (in this case, 10 coin flips), k is the number of successful outcomes (heads), and p is the probability of success (0.5 for unbiased coins).

P(8 heads) = C(10, 8) × 0.5⁸ × 0.5² = 45 × 0.0039 × 0.25 = 0.0439
P(9 heads) = C(10, 9) × 0.5⁹ × 0.5¹ = 10 × 0.00195 × 0.5 = 0.0098
P(10 heads) = C(10, 10) × 0.5¹⁰ × 0.5⁰ = 1 × 0.00098 × 1 = 0.00098

Now, add these probabilities together: 0.0439 + 0.0098 + 0.00098 = 0.0547.

Therefore, the probability of getting a result as extreme or more extreme than 8 heads is 0.0547, which corresponds to answer choice (a).

To learn more about probability here:

brainly.com/question/30034780#

#SPJ11

If the inputs of a J-K flip-flop are J= 1 and K = 1 while the outputs are Q = 0 and Q= 1, what will the outputs be after the next clock pulse occurs? A) Q=0,Q=0 B) Q=1,Q=1 C) Q=1,Q=0 D) Q=0,Q= = 1 An eight-line multiplexer must have A) four data inputs and three select inputs. C) eight data inputs and four select inputs. B) eight data inputs and two select inputs. D) eight data inputs and three select inputs.

Answers

If the inputs of a J-K flip-flop are J= 1 and K = 1 while the outputs are Q = 0 and Q= 1, the outputs after the next clock pulse occurs are C) Q=1, Q=0. An eight-line multiplexer must have D) eight data inputs and three select inputs.

For the first question, with the J-K flip-flop:
Given inputs J = 1 and K = 1, and outputs Q = 0 and Q' = 1. After the next clock pulse occurs, the outputs will be:
A) Q = 0, Q' = 0
B) Q = 1, Q' = 1
C) Q = 1, Q' = 0
D) Q = 0, Q' = 1
Answer: Since the J-K flip-flop is in toggle mode when J = 1 and K = 1, the outputs will toggle. Therefore, the correct answer is C) Q = 1, Q' = 0.
For the second question, regarding an eight-line multiplexer:
A) four data inputs and three select inputs.
B) eight data inputs and two select inputs.
C) eight data inputs and four select inputs.
D) eight data inputs and three select inputs.
Answer: An eight-line multiplexer requires three select inputs to choose from eight data inputs ([tex]2^3[/tex] = 8). Therefore, the correct answer is D) eight data inputs and three select inputs.

To learn more about multiplexer, refer:-

https://brainly.com/question/29609961

#SPJ11

At the same rate, how long would it take him to drive 335 miles?

Answers

It would take Deshaun 5 hours to drive 335 miles at the same rate.

What is speed?

The SI unit of speed is m/s, and speed is defined as the ratio of distance to time. It is the shift in an object's location with regard to time.

We can use the formula:

rate = distance / time

to solve the problem. The rate is constant, so we can use it to find the time for a different distance.

First, we find Deshaun's rate:

rate = distance / time = 469 miles / 7 hours = 67 miles per hour

Now we can use this rate to find the time it would take to drive 335 miles:

time = distance / rate = 335 miles / 67 miles per hour

time = 5 hours

Therefore, it would take Deshaun 5 hours to drive 335 miles at the same rate.

Learn more about speed on:

https://brainly.com/question/13262646

#SPJ9

The complete question is:

Deshaun drove 469 miles in 7 hours. At the same rate, how long would it take him to drive 335 miles?

find the global extreme values of f(x, y) = x^2 − xy +y^2 on the closed triangular region in the first quadrant bounded by the lines x = 4, y = 0, and y = x.

Answers

The global maximum value of f(x, y) on the closed triangular region occurs at either (4, 0) or (0, 4), both of which have a value of 16.

The global minimum value of f(x, y) occurs at the critical point (0, 0), with a value of 0

How to find the global maximum and minimum value of [tex]f(x,y)[/tex]?

To find the Optimization of multivariable functions i.e, global extreme values of [tex]f(x, y) = x^2 - xy + y^2[/tex] on the closed triangular region in the first quadrant bounded by the lines x = 4, y = 0, and y = x,

We need to first find the critical points of the function in the interior of the region and evaluate the function at these points, and then evaluate the function at the boundary points of the region.

To find the critical points of the function in the interior of the region, we need to solve the system of partial derivatives:

[tex]df/dx = 2x - y = 0\\f/dy = -x + 2y = 0[/tex]

Solving this system of equations, we get the critical point (x, y) = (0, 0).

To check whether this point is a maximum or a minimum, we need to evaluate the second partial derivatives of f:

[tex]d^2f/dx^2 = 2\\d^2f/dy^2 = 2\\d^2f/dxdy = -1[/tex]

The determinant of the Hessian matrix is:

[tex]d^2f/dx^2 \times d^2f/dy^2 - (d^2f/dxdy)^2 = 4 - 1 = 3[/tex]

Since this determinant is positive and [tex]d^2f/dx^2 = d^2f/dy^2 = 2[/tex] are both positive, the critical point (0, 0) is a local minimum.

Next, we need to evaluate the function at the boundary points of the region. These are:

(4, 0): f(4, 0) = 16

(0, 0): f(0, 0) = 0

(0, 4): f(0, 4) = 16

(y, y) for 0 ≤ y ≤ 4: [tex]f(y, y) = 2y^2 - y^2 = y^2[/tex]

Therefore, the global maximum value of f(x, y) on the closed triangular region occurs at either (4, 0) or (0, 4), both of which have a value of 16.

The global minimum value of f(x, y) occurs at the critical point (0, 0), with a value of 0.

Learn more about Optimization of multivariable functions

brainly.com/question/30216710

#SPJ11

nollostidu2 bed enbelwand ris obsMA
7. A physician assistant applies gloves prior to examining each patient. She sees an
с и
3. smith
average of 37 patients each day. How many boxes of gloves will she need over the
span of 3 days if there are 100 gloves in each box?
sibain dossi
tawans
8. A medical sales rep had the goal of selling 500 devices in the month of November.
He sold 17 devices on average each day to various medical offices and clinics. By
how many devices did this medical sales rep exceed to fall short of his November
goal?
9. There are 56 phalange bones in the body. 14 phalange bones are in each hand. How
many phalange bones are in each foot?
10. Frank needs to consume no more than 56 grams of fat each day to maintain his
current weight. Frank consumed 1 KFC chicken pot pie for lunch that contained 41
grams of fat. How many fat grams are left to consume this day?
LAO
11. The rec center purchases premade smoothies in cases of 50. If the rec center sells
an average of 12 smoothies per day, how many smoothies will be left in stock after
4 days from one case?
12. Ashton drank a 24 oz bottle of water throughout the day at school. How many
ounces should he consume the rest of the day if the goal is to drink the
recommended 64 ounces of water per day?
13. Kathy set a goal to walk at least 10 miles per week. She walks with a friend 3
times each week and averages 2.5 miles per walk. How many more miles will she
need to walk to meet her goal for the week?

Answers

On quantities:

3 boxes.

10 devices.

28 phalange bones.

15 grams of fat.

2 smoothies left.

1256 oz of water.

2.5 miles.

How to calculate quantity?

7. The physician assistant sees an average of 37 x 3 = 111 patients over 3 days.

Since each patient requires 2 gloves, the total number of gloves needed is 111 x 2 = 222 gloves.

Since there are 100 gloves in each box, the number of boxes needed is 222/100 = 2.22, which rounds up to 3 boxes.

8. The medical sales rep sells 17 devices per day on average. To sell 500 devices in November, the sales rep needs to sell 500/30 = 16.67 devices per day on average.

The sales rep exceeds the goal by 17 - 16.67 = 0.33 devices per day on average.

Therefore, the sales rep exceeds the goal by 0.33 x 30 = 10 devices.

9. There are 56 - (14 x 2) = 28 phalange bones in each foot.

10. Frank consumed 41 grams of fat for lunch, so he has 56 - 41 = 15 grams of fat left to consume.

11. The rec center sells an average of 12 smoothies per day, so in 4 days, it will sell 12 x 4 = 48 smoothies.

Since there are 50 smoothies in each case, there will be 50 - 48 = 2 smoothies left in stock after 4 days.

12. Ashton drank 24 oz of water, so he needs to drink an additional 64 - 24 = 40 oz of water.

Since 1 oz = 0.03125 cups, Ashton needs to drink 40/0.03125 = 1280 cups of water.

Therefore, Ashton needs to drink 1280 - 24 = 1256 oz of water for the rest of the day.

13. Kathy walks 3 times a week for a total of 3 x 2.5 = 7.5 miles.

To meet her goal of 10 miles per week, Kathy needs to walk an additional 10 - 7.5 = 2.5 miles.

Find out more on quantity here: https://brainly.com/question/1692392

#SPJ1

Find the following probabilities based on the standard normal variable Z. (You may find it useful to reference the z table. Round your answers to 4 decimal places.) a. P(Z > 1.02) b. P(Zs-2.36) c. P(0

Answers

a. The probability of P(Z > 1.02) = 0.1539
b. P(Z ≤ -2.36) = 0.0091
c. P(0 ≤ Z ≤ 1.07) = 0.3577


1. To find the probabilities, you need to reference a standard normal (z) table.


2. For a. P(Z > 1.02), look up 1.02 on the z table. The corresponding value is 0.8461. Since the question asks for P(Z > 1.02), subtract the value from 1: 1 - 0.8461 = 0.1539.


3. For b. P(Z ≤ -2.36), look up -2.36 on the z table. The corresponding value is 0.0091. Since the question asks for P(Z ≤ -2.36), the value is already correct: 0.0091.


4. For c. P(0 ≤ Z ≤ 1.07), look up 1.07 on the z table. The corresponding value is 0.8577. Since the question asks for P(0 ≤ Z ≤ 1.07), subtract 0.5 (value for Z = 0): 0.8577 - 0.5 = 0.3577.

To know more about z table click on below link:

https://brainly.com/question/30765367#

#SPJ11

enlarge triangle M (all details in image)

Answers

Answer:

Using a scale factor of -1/2, you can enlarge the center with the axis points, (-1,-1).

Step-by-step explanation:

In order to enlarge the triangle M, you would need to use the scale factor of -1/2.

With the center of enlargement then found on plotted axis (-1, -1), one would find a new triangle labeled N.

assume z is a standard normal random variable. then p(1.20 ≤ z ≤ 1.85) equals _____.a. .0829b. .8527c. .4678d. .3849

Answers

Answer:

Step-by-step explanation:

Using a standard normal table, we can find the area under the curve between 1.20 and 1.85 to be approximately 0.4678. Therefore, the answer is (c) 0.4678.

The discrete random variable X is the number of students that show up for Professor Adam's office hours on Monday afternoons. The table below shows the probability distribution for X. What is the probability that fewer than 2 students come to office hours on any given Monday? X Р(Х) 0 40 1 30 2 .20 3 .10 Total 1.00 0.50 0.40 0.70 0.30

Answers

The probability that fewer than 2 students come to office hours on any given Monday is 0.70.

How we find the probability?

To find the probability that fewer than 2 students come to office hours on any given Monday, we need to calculate the sum of the probabilities of X=0 and X=1.

P(X < 2) = P(X = 0) + P(X = 1)

= 0.40 + 0.30

= 0.70

From the given probability distribution, we can see that the probability of X=0 is 0.40 and the probability of X=1 is 0.30. These represent the probabilities of no students or one student showing up for office hours, respectively.

To find the probability that fewer than 2 students come to office hours on any given Monday, we need to add these probabilities together since X can only take on integer values.

Therefore, P(X < 2) = P(X = 0) + P(X = 1) = 0.40 + 0.30 = 0.70.

This means that there is a 70% chance that either no students or one student will show up for office hours on any given Monday.

Learn more about Probability

brainly.com/question/16484393

#SPJ11

Find all values of c such that the parabolas y = 9x2 and x = c + 3y2 intersect each other at right angles. (Enter your answers as a comma-separated list.)

Answers

The value of c is -10/3. This can be answered by the concept of Differentiation.

To find the values of c for which the parabolas y = 9x² and x = c + 3y² intersect at right angles, we need to consider the slopes of the tangent lines at the intersection points.

First, let's find the derivatives of both functions to get the slopes:

For y = 9x², let's find dy/dx:
dy/dx = 18x

For x = c + 3y², let's find dx/dy:
dx/dy = 1 / (6y)

At the intersection points, we have:
9x² = y
c + 3y² = x

Since the tangent lines are perpendicular, their slopes multiply to -1:
(18x)(1 / (6y)) = -1

Now, substitute y = 9x² into the equation:
(18x)(1 / (6 × 9x²)) = -1
(18x)(1 / (54x²)) = -1
(1 / (3x)) = -1

Solving for x, we get x = -1/3.

Now substitute this value of x into the equation for y:
y = 9(-1/3)²
y = 9(1/9)
y = 1

So the intersection point is (-1/3, 1). Now substitute the value of y back into the equation for x to find c:
-1/3 = c + 3(1²)
-1/3 = c + 3
c = -1/3 - 3
c = -10/3

Therefore, the value of c is -10/3.

To learn more about Differentiation here:

brainly.com/question/24898810#

#SPJ11

find the area of the region that is bounded by the curve r=2sin(θ)−−−−−−√ and lies in the sector 0≤θ≤π.

Answers

The area of the region bounded by the curve r = 2sin(θ) in the sector 0≤θ≤π is π/2 square units.

The curve given by the polar equation r = 2sin(θ) is a sinusoidal spiral that starts at the origin, goes out to a maximum distance of 2 units, and then spirals back into the origin as θ increases from 0 to 2π. The sector 0≤θ≤π is half of this spiral, so we can find its area by integrating the area element dA = 1/2 r^2 dθ over this sector

A = ∫[0,π] 1/2 (2sin(θ))^2 dθ

Simplifying the integrand and applying the half-angle identity for sin^2(θ), we get

A = ∫[0,π] sin^2(θ) dθ

= ∫[0,π] (1 - cos^2(θ)) dθ

Integrating term by term, we get

A = [θ - 1/2 sin(2θ)]|[0,π]

= π/2 square units.

Learn more about area here

brainly.com/question/31402986

#SPJ4

Solve the following differential equations using the method of undetermined coefficients.

a) y''-5y'+4y=8ex​
b) y''-y'+y=2sin3x

Determine the form of a particular solution. a) y(4)+y'''=1-x2e-x​ b) y'''-4y''+4y'=5x2-6x+4x2e2x+3e5x

Answers

a) The general solution is y(x) = y_c(x) + y_p(x) = c1e^x + c2e^(4x) + 8ex.

b) The general solution is y(x) = y_c(x) + y_p(x) = c1e^(x/2)cos((√3/2)x) + c2e^(x/2)sin((√3/2)x) - (1/4)sin(3x).

For the differential equation y'' - 5y' + 4y = 8ex, the characteristic equation is r^2 - 5r + 4 = 0, which has roots r1 = 1 and r2 = 4. Thus, the complementary function is y_c(x) = c1e^x + c2e^(4x).

To find the particular solution, we guess a solution of the form y_p(x) = Ae^x. Then, y_p''(x) - 5y_p'(x) + 4y_p(x) = Ae^x - 5Ae^x + 4Ae^x = Ae^x. We need this to equal 8ex, so we set A = 8, and the particular solution is y_p(x) = 8ex.

Thus, the general solution is y(x) = y_c(x) + y_p(x) = c1e^x + c2e^(4x) + 8ex.

b) For the differential equation y'' - y' + y = 2sin(3x), the characteristic equation is r^2 - r + 1 = 0, which has roots r1,2 = (1 ± i√3)/2. Thus, the complementary function is y_c(x) = c1e^(x/2)cos((√3/2)x) + c2e^(x/2)sin((√3/2)x).

To find the particular solution, we guess a solution of the form y_p(x) = A sin(3x) + B cos(3x). Then, y_p''(x) - y_p'(x) + y_p(x) = -9A sin(3x) - 9B cos(3x) - 3A cos(3x) + 3B sin(3x) + A sin(3x) + B cos(3x) = -8A sin(3x) - 6B cos(3x). We need this to equal 2sin(3x), so we set A = -1/4 and B = 0, and the particular solution is y_p(x) = (-1/4)sin(3x).

Thus, the general solution is y(x) = y_c(x) + y_p(x) = c1e^(x/2)cos((√3/2)x) + c2e^(x/2)sin((√3/2)x) - (1/4)sin(3x).

To know more about general solution refer here:

https://brainly.com/question/13594562

#SPJ11

write cos(sin^-1x-tan^-1y) in terms of x and y

Answers

cos(sin⁻¹ˣ-tan^-1y) can be written as: x/√(1+y²) + √(1-x²)/√(1+y²). This can be answered by the concept of Trigonometry.

We can use the trigonometric identity cos(a-b) = cos(a)cos(b) + sin(a)sin(b) to write cos(sin⁻¹ˣ-tan^-1y) in terms of x and y.

Let a = sin⁻¹ˣ and b = tan^-1y, then we have:

cos(sin⁻¹ˣ-tan^-1y) = cos(a-b)

= cos(a)cos(b) + sin(a)sin(b)

= (√(1-x²))(1/√(1+y²)) + x/√(1+y²)

= x/√(1+y²) + √(1-x²)/√(1+y²)

Therefore, cos(sin⁻¹ˣ-tan^-1y) can be written as:

x/√(1+y²) + √(1-x²)/√(1+y²)

To learn more about Trigonometry here:

brainly.com/question/29002217#

#SPJ11

Answer this math question for 15 points :)

Answers

Answer:

Step-by-step explanation:

use Pythagorean triangle:

a^{2} + b^{2} = c^{2}

a= 12

b= 16

c = ?

12^{2} + 16^{2} = c^{2}

144 + 256 = c^{2}

400 = c^{2}

\sqrt{400} = c

20 = c

c = 20 ft

the radius of a circle is increasing at a rate of centimeters per second. part 1: write an equation to compute the area A of the circle using the radius r . use pi for
A = ______ cm.

Answers

The equation to compute the area A of the circle is: [tex]A = π(r^2 - r0^2) + A0[/tex] where r0 is the initial radius and A0 is the initial area.

The equation to compute the area A of a circle with radius r is [tex]A = πr^2[/tex].

Using this equation and the given information that the radius is increasing at a rate of centimeters per second, we can write:

[tex]\frac{dA}dt} = 2rπ \frac{dr}{dt}[/tex]

where dA/dt represents the rate of change of area with respect to time, and [tex]\frac{dr}{dt}[/tex] represents the rate of change of radius with respect to time.

Part 1:

If we want to find the area of the circle at a specific time t, we can integrate both sides of the equation with respect to time:

[tex]\int\limits dA= \int\limits 2πr \frac{dr}{dt}  \, dt[/tex]

Integrating both sides gives:

[tex]A = πr^2 + C[/tex]

where C is the constant of integration. Since we are given the initial radius, we can use it to find the value of C:

When t = 0, r = r0

[tex]A = πr0^2 + C[/tex]

Therefore, [tex]C = A - πr0^2[/tex]

Substituting this value of C back into the equation gives:

[tex]A = πr^2 + A - πr0^2[/tex]

Simplifying gives:


[tex]A =π(r^2 - r0^2) + A0[/tex]

where A0 is the initial area of the circle.

Therefore, the equation to compute the area A of the circle is:

[tex]A = π(r^2 - r0^2) + A0[/tex]

where r0 is the initial radius and A0 is the initial area.

To know more about "Area of cirlce" refer here:

https://brainly.com/question/6042268#

#SPJ11

what is the least common multiple of 24 and 32?
i need an answer asap ​

Answers

96

Explanation:

Write the prime factorization of both the numbers.

24=2×2×2×3

32=2×2×2×2×2

The LCM of 24 and 32 is 96. To find the LCM (least common multiple) of 24 and 32, we need to find the multiples of 24 and 32 (multiples of 24 = 24, 48, 72, 96; multiples of 32 = 32, 64, 96, 128) and choose the smallest multiple that is exactly divisible by 24 and 32

Write any 10 positive rational numbers (7th grade exercise)

Answers

1/4, 2/9, 7/11, 3/13, 5/12, 4/32, 7/29, 14/50, 6/10, 9/20

twenty-four feet (six 4-ft sections) of track lighting must be installed in a continuous row in a retail store. what is the minimum number of supports required?

Answers

The minimum number of supports required is 7.

To determine the minimum number of supports required for the twenty-four feet (six 4-ft sections) of track lighting to be installed in a continuous row in a retail store, follow these steps:

1. Determine the total length of the track lighting: 6 sections * 4 feet per section = 24 feet.

2. Consider that a support is needed at the beginning and end of the track.

3. Assess the spacing between supports. For instance, let's assume supports can be placed every 4 feet.

4. Calculate the number of supports in between the ends: (24 feet - 4 feet) / 4 feet = 5 supports.

5. Add the supports at the beginning and end: 5 supports + 2 supports = 7 supports.

The minimum number of supports required is 7.

Learn more about length here,

https://brainly.com/question/31573578

#SPJ11

(56x^2-60x+16)
Divided by
28x-16

Answers

Answer:

= 2x - 1

Step-by-step Explanation:

We can use polynomial long division to divide (56x^2-60x+16) by (28x-16).



2x - 1
-------------------
28x - 16 | 56x^2 - 60x + 16
56x^2 - 32x
------------
-28x + 16
-28x + 16
---------
0

Therefore, the quotient is 2x - 1 and the remainder is 0. So we have:

(56x^2-60x+16) / (28x-16) = 2x - 1

Answer: the quotient is 2x - 1 and the remainder is 0. So we can write:

(56x^2-60x+16) ÷ (28x-16) = 2x - 1.

Step-by-step explanation:

2x - 1

-------------

28x - 16 | 56x^2 - 60x + 16

56x^2 - 32x

--------------

-28x + 16

-28x + 16

----------

0

e is bounded by the parabolic cylinder z − 1 2 y 2 and the planes x 1 z − 1, x − 0, and z − 0; sx, y, zd − 4

Answers

The volume of the region that bounds e is 15/2.

To visualize the region bounded by the parabolic cylinder, planes, and the plane z = 4, we can plot the surfaces using a 3D graphing software or by hand.

The parabolic cylinder z - 1/2 y^2 is a cylinder that opens upwards along the z-axis and its cross-sections perpendicular to the z-axis are parabolas. The planes x = 0 and z = 0 bound the cylinder on the left and at the bottom, respectively. The plane x = 1 bounds the cylinder on the right, and the plane z = 4 bounds it from above.

The intersection of the parabolic cylinder and the plane z = 4 is a parabolic curve in the plane z = 4. The intersection of the parabolic cylinder and the plane x = 1 is a straight line segment that runs along the y-axis from y = -2 to y = 2. The intersection of the parabolic cylinder and the plane z = 0 is the x-y plane, which contains the bottom of the cylinder.

To find the region that bounds e, we need to find the points where the parabolic cylinder intersects the planes x = 0, x = 1, and z = 1, and then determine the region that lies between these curves.

The intersection of the parabolic cylinder and the plane x = 0 is the y-axis. Therefore, the left boundary of the region is y = -2 and the right boundary is y = 2.

The intersection of the parabolic cylinder and the plane x = 1 is a line segment along the y-axis from y = -2 to y = 2. Therefore, the region is bounded on the left by the y-axis and on the right by the line segment x = 1, y = z^2/2 + 1/2.

The intersection of the parabolic cylinder and the plane z = 1 is a parabolic curve in the plane z = 1. To find the equation of this curve, we substitute z = 1 into the equation of the parabolic cylinder:

1 - 1/2 y^2 = x

Solving for y^2, we get:

y^2 = 2 - 2x

Therefore, the equation of the parabolic curve in the plane z = 1 is:

y = ±sqrt(2 - 2x)

The region bounded by the parabolic cylinder, planes, and the plane z = 4 is

therefore the region is given by:

0 ≤ x ≤ 1
-y/2 + 1/2 ≤ z ≤ 4
-y ≤ x^2/2 - 1/2

To visualize this region in 3D, we can plot the parabolic cylinder and the planes x = 0, x = 1, and z = 1 and shade the region between them. Then, we can extend this region upwards to the plane z = 4 to obtain the full region that bounds e.

To find the volume of this region, we can integrate the function 1 over this region with respect to x, y, and z:

∫∫∫_R 1 dV

where R is the region defined by the inequalities above. However, this triple integral is difficult to evaluate directly, so we can use the fact that the region is symmetric about the y-axis to simplify the integral by integrating first with respect to y and then with respect to x and z:

V = 2∫∫∫_R 1 dV

where the factor of 2 accounts for the symmetry of the region. Integrating with respect to y first, we get:

V = 2∫_{-2}^{2} ∫_{y^2/2 - 1/2}^{1/2} ∫_{-y/2 + 1/2}^{4} 1 dz dx dy

Evaluating this integral, we get:

V = 15/2

Therefore, the volume of the region that bounds e is 15/2.

Visit to know more about Volume:-

brainly.com/question/463363

#SPJ11

Find the surface area of the prism.

Answers

it should be 228: the triangles are 60, the side rectangles are 39 and the back rectangle is 30
Other Questions
What is the wavelength of a wave with a speed of 24 m/s and a period of 0.5 s? Given: Unknown:Formula:Solution: Answer: sort the alkyl halide used to its substitution pattern:1-bromobutane primary 4 2-bromobutane secondary 2-bromo-2-methylbutane tertiary A milk vendor had 9 litres of milk. She sold 6 litres of milk. How much milk remaine Select one correct sentence in the passage.Which sentence best reveals President Obama's argument for funding the space program?(7) Now, I'll close by saying this. I know that some Americans have asked a question that's particularly apt on Tax Day: Whyspend money on NASA at all? Why spend money solving problems in space when we don't lack for problems to solve here onthe ground? And obviously our country is still reeling from the worst economic turmoil we've known in generations. We havemassive structural deficits that have to be closed in the coming years.(8) But you and I know this is a false choice. We have to fix our economy. We need to close our deficits. But for pennies on thedollar, the space program has fueled jobs and entire industries. For pennies on the dollar, the space program has improved ourlives, advanced our society, strengthened our economy, and inspired generations of Americans. And I have no doubt that NASAcan continue to fulfill this role.... (Applause.)(9) Now, little more than 40 years ago, astronauts descended the nine-rung ladder of the lunar module called Eagle, and allowedtheir feet to touch the dusty surface of the Earth's only Moon. This was the culmination of a daring and perilous gambit -- of anendeavor that pushed the boundaries of our knowledge, of our technological prowess, of our very capacity as human beings tosolve problems. It wasn't just the greatest achievement in NASA's history -- it was one of the greatest achievements in humanhistory. Who discovered the South Pass to the Oregon Territory?O Dr. Marcus WhitmanO Jason LeeO Jedediah Smith Section 9.6 lists five general methods used by a NIPS device to detect an attack. List some of the pros and cons of each method.Create a table: Method Pros Cons 10.2. define the strategic goals of supply chain management, and indicate how each element of a supply chain (purchasing, production, inventory, transportation, and distribution) affects these goals. If twelve 1.5 MQ resistors are connected in parallel across 50 V, RT equals______Select one: A. 1.5 M O B. 0.125 MQ C. 1.25 MQ D. 1 MQ If a non-cyclic alkane shows a molecular ion peak at m/z 492, what is the chemical formula?Complete the formula:CnHyn=_____ carbon atomsy=_____ hydrogen atoms T F In spaced responding DRL, the reinforcer is delivered for the absence of a behavior after a time interval has passed. Determine [oh][oh] of a solution that is 0.230 mm in hco3hco3. according to needleman (in the moyers interview), how has the primary focus of life changed between the middle ages and now? A sports statistician determined that the probability of a certain rugby team winning its next match is 11/23. Find the odds against the team winning its next match. A moon in another galaxy from our own has the same gravity as Earth. a. Determine the radius of the moon is it has a tangential velocity of 400,000 m/s b. Determine the mass of the moon if its orbital period (T-time to complete one rotation) is 24 hours. Please help! Looking for a clear explanation of this composite function question (see attachment)! I NEED HELP ASAP PLEASE HELP!!!!!! 7. Eight centimeters on the map represent two kilometers in reality. Determine the scale of this Farrell, Inc. purchased land for $100,000 by signing a note payable for the same amount. Additionally, Farrell paid cash for the following: title insurance of $1,700, a commission of $10,000, $3,600 to remove an unwanted building, $2,800 to level and grade the property, $12,000 for paving, $19,000 to construct a fence around the perimeter, and S5,200 for lighting. The journal entry for the cash payment is: A. debit land $118,100, debit land improvement $36,200, credit cash $154,300 B. debit land $11 1 ,700, debit land improvement S42,600, credit cash $154,300 O c. debit land $11 ,700, debit land improvement $42,600, credit cash S54.300 O D. debit land $18, 100, debit land improvement $36,200, credit cash $54,300 Consider the time series data in the file sunspot.dat on the website. It consists of 285 observations of the number of sunspots from 1700 to 1984. This a quantity that is believed to affect our weather patterns. This time series has been studied by many authors like Yule etc. We will study the square root of the data (this transformation ensures that the variance is roughly constant). That is, for the Series Z1, Z2, Zn from the file sunspot.dat, first compute the series Xt = sqrt(Zt) and work with the series {Xt} in what follows.Compute the sample ACF and the sample PACF for this series. A company uses two backup servers to secure its data. The probability that a server fails is 0.21. Assuming that the failure of a server is independent of the other servers, what is the probability that one or more of the servers is operational?