Answers
Answer:
(3)
Step-by-step explanation:
the limit lines are the same (and correct) in all 4 pictures.
the difference is the applicable side of the lines.
y <= x + 3
because of the "<=" the valid area is below the line. in our case to the right and below the line.
that eliminates (1) and (4).
y >= -2x - 2
because of the ">=" the valid area is above the line. in our case right and above the line.
so, (3) is correct.
Related Questions
Two functions are shown in the table below:
Complete the table, then select the value that is a solution to f(x) = g(x).
Function x = 1 x = 2 x = 3 x = 4 x = 5 x = 6
f(x) = −x2 + 4x + 12
g(x) = x + 8
Answers
The value that is a solution to f(x) = g(x) is x = 4.
What is a function?
Each element of X receives exactly one element of Y when a function from one set to the other is used. The sets X and Y are collectively referred to as the function's domain and codomain, respectively. Initially, functions represented the idealized relationship between two changing quantities.
Here, we have
Given: f(x) = −x² + 4x + 12
g(x) = x + 8, x = 1 x = 2 x = 3 x = 4 x = 5 x = 6
We have to find the value that is a solution to f(x) = g(x).
When x = 1
f(1) = −(1)² + 4(1) + 12
f(1) = -1 + 4 + 12
f(1) = 15
g(1) = 1 + 8
g(1) = 9
f(1) ≠ g(1)
When x = 2
f(2) = −(2)² + 4(2) + 12
f(2) = -4 + 8 + 12
f(2) = 16
g(2) = 2 + 8
g(2) = 10
f(2) ≠ g(2)
When x =3
f(3) = −(3)² + 4(3) + 12
f(3) = -9 + 12 + 12
f(3) = 15
g(3) = 3 + 8
g(3) = 11
f(3) ≠ g(3)
When x = 4
f(4) = −(4)² + 4(4) + 12
f(4) = -16 + 16 + 12
f(4) = 12
g(4) = 4 + 8
g(4) = 12
f(4) = g(4)
When x = 5
f(5) = −(5)² + 4(5) + 12
f(5) = -25 + 20 + 12
f(5) = -5 + 12
f(5) = 7
g(5) = 5 + 8
g(5) = 13
f(5) ≠ g(5)
When x = 6
f(6) = −(6)² + 4(6) + 12
f(6) = -36 + 24 + 12
f(6) = 0
g(6) = 6 + 8
g(6) = 14
f(6) ≠ g(6)
Hence, the value that is a solution to f(x) = g(x) is x = 4.
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The question is
A bike shop has 11 red bikes, 3 blue bikes, 4 orange bikes, and 12 silver bikes.
Complete the ratio:
For every 1 orange bike, there are 3 _____
Options:
Blue Bikes
Red Bikes
Silver Bikes Can someone pls answer this question!?
Answers
In the ratio , For every 1 orange bike, there are 3 C) silver bikes.
What is ratio?
When two numbers are compared, the ratio between them shows how often the first number contains the second. As an illustration, the ratio of oranges to lemons in a dish of fruit is 8:6 if there are 8 oranges and 6 lemons present. It is also written as fraction. Like 4/3 = 4:3.
Here the number of bikes are , 11 red bikes, 3 blue bikes, 4 orange bikes, and 12 silver bikes.
Now here Number of orange bikes = 4
we need to find bike which the ratio of orange bikes to other bike is 1:3.
Then , orange bike to red bike ratio is 4:11 ≠ 1:3
Then orange bike to blue bike ratio is 4:3 ≠ 1:3
Now orange bike to silver bike ratio is 4:12 = 1:3
Hence For every 1 orange bike, there are 3 C) silver bikes.
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help please :)
It would be much apperechiated <3
Answers
Answer:
A: discrete data — because number of bottles can only be whole numbers and thus discrete
B: continuous data — time is a continuous variable
C: qualitative data — there are categories of different sports so this is qualitative.
Use the Law of Sines to solve the triangle. Round your answers to two decimal places. B=A=94.7∘,C=13.2∘,a=22.1. [−15.45 Points ] LARPCALC11 5.5.007. Solve the equation. (Find all solutions of the equation in the interval [0,2π ). Enter your answers as a comma-se cos(2x)+cos(x)=0 x= Find the component form and the magnitude of the vector v. component form v= magnitude ∥v∥=
Answers
Using Law of Sines to solve a triangle with B=A=94.7°, C=13.2°, and a=22.1 gives b≈2.25 and angles A = B ≈ 94.7 and C≈13.2. The equation cos(2x) + cos(x) = 0 has solutions x=π/3, 2π/3, 4π/3, and 5π/3 on the interval [0, 2π). If it has magnitude 5 and makes a 60° angle with the positive x-axis, then its component form is (2.5, 4.33) and its magnitude is ∥v∥ ≈ 5.06.
First, we can use the Law of Sines to find the length of side b
sin(B)/b = sin(A)/a
sin(94.7)/b = sin(94.7)/22.1
b = 22.1 * sin(13.2) / sin(94.7)
b ≈ 2.25
Next, we can use the fact that the angles of a triangle sum to 180 degrees to find the measure of angle B
B + A + C = 180
94.7 + 94.7 + 13.2 = 202.6
B ≈ 72.1
Finally, we can use the fact that the angles of a triangle sum to 180 degrees again to find the measure of angle C
B + A + C = 180
72.1 + 94.7 + C = 180
C ≈ 13.2
Therefore, the triangle has sides a = 22.1, b ≈ 2.25, and c ≈ 22.11, and angles A = B ≈ 94.7 and C ≈ 13.2.
To solve the equation cos(2x) + cos(x) = 0 on the interval [0, 2π), we can use the identity cos(2x) = 2cos^2(x) - 1 to get
2cos^2(x) - 1 + cos(x) = 0
Simplifying
2cos^2(x) + cos(x) - 1 = 0
We can now use the quadratic formula to solve for cos(x)
cos(x) = (-b ± sqrt(b^2 - 4ac)) / 2a
where a = 2, b = 1, and c = -1. Substituting in
cos(x) = (-1 ± sqrt(1 + 8)) / 4
cos(x) = (-1 ± sqrt(9)) / 4
cos(x) = -1/2 or cos(x) = 1/2
Taking the inverse cosine of each solution
x = 2π/3 or x = 4π/3 or x = π/3 or x = 5π/3
Therefore, the solutions in the interval [0, 2π) are x = π/3, x = 2π/3, x = 4π/3, and x = 5π/3.
To find the component form and magnitude of a vector v, we need to know its magnitude and direction. If we have the magnitude and the angle that the vector makes with the positive x-axis, we can use trigonometry to find its component form.
Let's say that the magnitude of v is 5 and the angle that it makes with the positive x-axis is 60 degrees. Then the x-component of v is given by
v_x = ∥v∥ * cos(60)
v_x = 5 * cos(60)
v_x ≈ 2.5
And the y-component of v is given by
v_y = ∥v∥ * sin(60)
v_y = 5 * sin(60)
v_y ≈ 4.33
Therefore, the component form of v is (2.5, 4.33) and its magnitude is
∥v∥ = sqrt(v_x^2 + v_y^2) = sqrt(2.5^2 + 4.33^2) ≈ 5.06
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find the area of the parallelogram whose vertices are listed (0,0), (2,8), (7,4), (9,12)
Answers
The area of the parallelogram whose vertices are listed (0,0), (2,8), (7,4), (9,12). The area of the parallelogram is 20 square units.
To find the area of a parallelogram, we need to know the base and height of the parallelogram. One of the sides of the parallelogram will serve as the base, and the height will be the distance between the base and the opposite side.
We can start by drawing the parallelogram using the given vertices:
(0,0) (7,4)
*---------*
| |
| |
| |
*---------*
(2,8) (9,12)
We can see that the sides connecting (0,0) to (2,8) and (7,4) to (9,12) are parallel, so they are opposite sides of the parallelogram. We can use the distance formula to find the length of one of these sides:
d = √[(9 - 7)^2 + (12 - 4)^2]
= √[(2)^2 + (8)^2]
= √68
So the length of one side is √68.
Next, we need to find the height of the parallelogram. We can do this by finding the distance between the line connecting (0,0) and (2,8) and the point (7,4). We can use the formula for the distance between a point and a line to do this:
h = |(7 - 0)(8 - 4) - (2 - 0)(4 - 0)| / √[(2 - 0)^2 + (8 - 0)^2]
= |28 - 8| / √68
= 20 / √68
Now we have the base (√68) and the height (20 / √68) of the parallelogram, so we can find the area using the formula:
A = base x height
= (√68) x (20 / √68)
= 20
Therefore, the area of the parallelogram is 20 square units.
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is a basis for r2. find the coordinates of the vector x⃗ =[6−17] relative to the basis b.
Answers
To determine if a basis for R2, we need to check if the two vectors in the basis are linearly independent. Let's call these vectors v1 and v2. If we can find scalars c1 and c2 such that c1v1 + c2v2 = 0 (where 0 is the zero vector), then the two vectors are linearly dependent and not a basis for R2.
However, if the only solution to this equation is c1 = c2 = 0, then the vectors are linearly independent and form a basis for R2.
Let's say the basis for R2 is B = {v1, v2}. To find the coordinates of the vector x relative to this basis, we need to find scalars a1 and a2 such that x = a1v1 + a2v2.
In other words, we need to solve the system of equations:
6 = a1(1) + a2(-1)
-17 = a1(2) + a2(3)
Solving for a1 and a2, we get:
a1 = -5
a2 = -4
Therefore, the coordinates of the vector x relative to the basis B are (-5, -4).
To find the coordinates of the vector x⃗ = [6, -17] relative to the basis B, follow these steps:
Step 1: Identify the basis B.
First, you need to provide the basis B for R2. A basis for R2 consists of two linearly independent vectors, usually denoted as b1 and b2 (e.g., B = {b1, b2}).
Step 2: Set up the equation to express x⃗ in terms of the basis B.
Write x⃗ as a linear combination of the basis vectors b1 and b2:
x⃗ = c1 * b1 + c2 * b2
Step 3: Solve the system of equations for coefficients c1 and c2.
Create a system of linear equations to solve for c1 and c2 using the components of x⃗, b1, and b2.
Step 4: Obtain the coordinates relative to the basis B.
Once you have found the coefficients c1 and c2, the coordinates of x⃗ relative to the basis B will be (c1, c2).
Please provide the basis B to proceed with the calculation.
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Find the coordinate vector [x]b of the vector x relative to the given basis B. 31 - - 11 - 3 and B = {b1, b2} 0 [3] O P 이 5
Answers
The coordinate vector [x]b is: [x]b = [c1, c2]^T = [3, 2/5]^T relative to the given basis B. 31 - - 11 - 3 and B = {b1, b2} 0 [3] O P 이 5
To find the coordinate vector [x]b of the vector x relative to the basis B = {b1, b2}, we need to express x as a linear combination of b1 and b2, and then write down the coefficients as the coordinate vector.
Let's first find the coefficients by solving the system of equations:
x = c1*b1 + c2*b2
where x = [3, -1]^T, b1 = [1, -1]^T, and b2 = [0, 5]^T.
Substituting the values, we get:
[3, -1]^T = c1*[1, -1]^T + c2*[0, 5]^T
which gives us the following two equations:
3 = c1
-1 = -c1 + 5c2
Solving for c1 and c2, we get:
c1 = 3
c2 = 2/5
Therefore, the coordinate vector [x]b is:
[x]b = [c1, c2]^T = [3, 2/5]^T
To find the coordinate vector [x]_B of the vector x relative to the given basis B, you need to express x as a linear combination of the basis vectors b1 and b2. Based on the information provided, we have:
x = (31, -11, -3)
B = {b1, b2}
However, it seems that the values of b1 and b2 are missing or not clearly provided. If you could provide the correct values for b1 and b2.
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(1 point) show that rln(n)=nln(r). then determine the values of r (with r>0) for which the series ∑n=1[infinity]rln(n) converges.
Answers
Answer :-The series will only converge
To show that rln(n) = nln(r), we can take the natural logarithm of both sides:
ln(rln(n)) = ln(r) + ln(n)
Using the properties of logarithms, we can simplify this to:
ln(r) + ln(ln(n)) = ln(r) + ln(n)
Canceling out the ln(r) term, we are left with:
ln(ln(n)) = ln(n)
Taking the exponential of both sides, we get:
ln(n) = e^(ln(ln(n))) = ln(n)
This shows that rln(n) = nln(r).
To determine the values of r for which the series ∑n=1[infinity]rln(n) converges, we can use the integral test.
Integrating rln(x) with respect to x gives:
∫rln(x)dx = xrln(x) - x + C
Evaluating this from 1 to infinity, we get:
lim[x→∞] xrln(x) - x + C - (1ln(1) - 1 + C)
= lim[x→∞] xrln(x) - x + 1
Using L'Hopital's rule, we can evaluate the limit as:
lim[x→∞] rln(x) = ∞
Therefore, the series will only converge if rln(n) approaches zero as n approaches infinity. This means that r must be less than or equal to 1.
In summary, the values of r (with r>0) for which the series ∑n=1[infinity]rln(n) converges are r≤1.
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Use the information to find and compare Δy and dy. (Round your answers to three decimal places.)
y = 0.8x6 x = 1 Δx = dx = 0.1
Answers
Δy ≈ 0.449 and dy ≈ 0.480. Both values are close, but dy is slightly larger than Δy. This difference is due to the linear approximation of the change in y as opposed to the actual change in y when using the given function.
To find and compare Δy and dy, we will use the given function y = 0.8x6 and the values x = 1 and Δx = dx = 0.1.
First, find the value of y when x = 1:
y = 0.8(1)6 = 0.8
Next, find the value of y when x = 1 + Δx (i.e., x = 1.1):
y_new = 0.8(1.1)6 ≈ 1.2491
Now, we can calculate Δy as the difference between y_new and y:
Δy = y_new - y ≈ 1.2491 - 0.8 = 0.449
To find dy, we will use the derivative of the function y = 0.8x6:
dy/dx = 0.8 * 6 * x^5 = 4.8x5
Then, evaluate the derivative at x = 1:
dy/dx = 4.8(1)5 = 4.8
Finally, find dy by multiplying the derivative by Δx:
dy = (dy/dx) * Δx = 4.8 * 0.1 = 0.48
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In the figure, the triangles are similar. What is the
distance d from the senior high to the junior high?
Express your answer as a decimal if necessary,
rounded to the nearest tenth.
Senior
High
d'km
129 km
Junior
High
Semo
Stadium
km
Middle
School
210 km
Elementary
School
30 km
Answers
the actual answer is 24.2.m
Step-by-step explanation: won't let you put it in
complete the explanation of how a model can help you solve surface area and volume provlems. A (graph drawing or net) shows faces and helps you find ( surface area or volume problems). A (graph net or drawing) helps you choose a base. and height when finding (surface area volume or area)
pls i need it done in 20 mins
Answers
A model can help you solve surface area and volume problems because shows faces and helps you find the volume or area.
Why are surface area and volume problems challenging?These problems can be challenging for some students because it implies imaging or visualizing 3-d objects to understand the dimensions of the figure, the number of faces, and then to calculate the volume or surface area.
This can be solved by using a model such as a graph or drawing that will help you to get a better idea of the object that is being analyzed.
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simplify (15m^3n^-2p^-1/25m^-2n^-9)^-3
Answers
Answer:
view screenshot:)
Step-by-step explanation:
Solve for N in each equation.
52 + N = 75
N ÷ 6 = 10
17 = N - 8
9 = N ÷ 10
7 x N = 91
N - 20 = 32
55 - N = 22
N x 6 = 126
15 + N = 50
N ÷ 5 = 7
Answers
Step-by-step explanation:
23602590135233213535Simplify (2x-3y)^2-(3x+4y)(2x-3y).
Pls show working
Answers
1. Find your greatest common factor (GCF). 2x - 3y is your greatest common factor.
2. Factor out your GCF. (2x - 3y)((2x - 3y)²/2x - 3y) + -(3x + 4y)(2x - 3y)/2x - 3y) Don't fret about the size! This is the fastest way to simplify.
3. Simplify each term. (2x - 3y)(2x - 3y - 3x - 4y)
4. Combine like terms. (2x - 3y)((2x - 3x) + (-3y - 4y))
5. Simplify (2x - 3x) + (-3y - 4y). -x - 7y.
6. Simplify final equation. (2x - 3y)(-x - 7y)
ABC and DEF shown In the diagram below are similar.
• In ABC, m
.
in A DEF, m
What is the measure of
Answers
Check the picture below.
8. Hannah ordered books for her son from an online retailer. Each book costs $7.00, and there is a shipping fee of $5.00 for the entire order. a. Define the variables, and write an equation to represent the problem situation. b: c: Equation: b. Suppose Hannah spent a total of $61.00 on her order, including the shipping fee. How many books did Hannah order for her son? Hannah ordered books for her son.
Answers
Answer:
b- number of books
t- total spent
b7+5=t
she ordered 8 books
Step-by-step explanation:
$61 minus the $5 shipping fee = $56
$56 divided by $7 (the cost of each book) is 8
7b+5=61
-5 -5
7b = 56
-------------
7b
b= 8
so she bought 8 books
Hello please help me solve this problem! If you show step-by-step explanation it will be appreaciated!
Answers
Using the constant of proportionality we know that the correct statements are:
(B) The content of proportionality is 3.
(D) The equation that represents the constant of proportionality is y=3x.
What is the constant of proportionality?If the corresponding elements of two sequences of numbers, frequently experimental data, have a constant ratio, known as the coefficient of proportionality or proportionality constant, then the two sequences of numbers are proportional or directly proportional.
In the case of direct proportionality, we use k=y/x to calculate the proportionality constant.
If y = 12 and x = 6, then k = 12/6 equals 2.
So, we use the formula:
k = y/x
Then, the content of proportionality will be:
3/1 which is 3 and
6/2 which is also 3.
y = 3x is the equation that represents the proportion.
Therefore, using the constant of proportionality we know that the correct statements are:
(B) The content of proportionality is 3.
(D) The equation that represents the constant of proportionality is y=3x.
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estimate [infinity]Σ (2n + 1)-5 n=1
(2n+1)-5 correct to five decimal places
Answers
The estimate of the series is -2.
Using the formula for the sum of an infinite geometric series, we have:
[infinity]Σ (2n + 1)-5 n=1 = [(2(1)+1)-5]/(1-2) = -2
To find the error in our estimate, we can use the formula for the remainder of an infinite series:
R = |a(n+1)|/(1-r), where a = (2n+1)-5 and r = 2
Since we want the estimate to be correct to five decimal places, we need to find the smallest value of n such that |a(n+1)|/(1-r) < 0.00001:
|a(n+1)|/(1-r) = |(2(n+1)+1)-5|/2(n+1) < 0.00001
|(2n+3)-5| < 0.00001(2n+1)
|-2| < 0.00002n + 0.00001
n > 99999.5
Therefore, we need to calculate the sum up to at least the 100,000th term to be sure our estimate is correct to five decimal places. However, since the sum is -2, which is a finite number, we know that our estimate is already correct to five decimal places.
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in a class of 31 students 16 play football ,12 play tabletennis and 5 play both games find the number of student who play
1.atleast one of the games
2 none of the games
Answers
Okay, here are the steps to solve this problem:
* 16 students play football
* 12 students play table tennis
* 5 students play both football and table tennis
* So students who play football = 16
* Students who play table tennis = 12
* Students who play both = 5
* To find students who play at least one game:
16 + 12 - 5 = 23
* Total students = 31
* So students who play no game = 31 - 23 = 8
Therefore,
Number of students who play at least one game = 23
Number of students who play none of the games = 8
Does this make sense? Let me know if you have any other questions!
Rectangle WXYZ has consecutive vertices W(-9, -3), X(-9, 5), Y(-2, 5), and Z(-2, -3). Find the perimeter of rectangle WXYZ. units Find the area of rectangle WXYZ. square units
Answers
Answer:
24
Step-by-step explanation:
l×b
(-9,-3) (-9,5)
-81-45+27-15
36+12
48
the area of rectangle is 48
the boundaries of the shaded region are the -axis, the line =1, and the curve =‾‾√4. find the area of this region by writing as a function of and integrating with respect to
Answers
The given boundaries are the x-axis (y = 0), the line y = 1, and the curve y = √x (not √4 as mentioned, since √4 is a constant value). So, the area of the shaded region is 2/3 square units.
To find the area of the shaded region, we need to integrate the given functions with respect to x.
The given boundaries are the x-axis (y = 0), the line y = 1, and the curve y = √x (not √4 as mentioned, since √4 is a constant value).
First, we need to find the intersection points of the curve y = √x and the line y = 1. To do this, set the two equations equal to each other:
√x = 1
Square both sides to solve for x:
x = 1
Now, we can find the area of the shaded region by integrating the difference between the curve and the x-axis:
Area = ∫[1 - 0] (√x - 0) dx
To integrate, apply the power rule:
∫x^(1/2) dx = (2/3)x^(3/2)
Evaluate the integral from 0 to 1:
Area = [(2/3)(1)^(3/2) - (2/3)(0)^(3/2)] - [0]
Area = (2/3) - 0
Area = 2/3
So, the area of the shaded region is 2/3 square units.
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: In a sample of 20 items, you found six defective. In constructing a confidence interval for the proportion of defectives, you should use: the plus four method. the large-sample interval. neither of these two methods.
Answers
In a sample of 20 items, where six are defective. In this case, you should use a. the plus four methods to construct the confidence interval.
The plus four methods, also known as the adjusted-Wald method, are used when dealing with proportions, especially when the sample size is small or the proportion is close to 0 or 1. Since your sample size is only 20 items, the plus four methods is the most appropriate choice. This method involves adding four "virtual" observations to the sample data: two successes and two failures. This helps to adjust the estimates and produce a more accurate confidence interval.
In conclusion, for constructing a confidence interval for the proportion of defectives in a small sample like the one you provided, it's recommended to use the plus four methods (option a) as it adjusts for the small sample size and provides a more accurate estimate than the large-sample interval. Therefore the correct option is A.
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The total length of a beach is 17.4 kilometers. If lifeguards are stationed every 0.06 kilometers, including one at the end of the beach, how many lifeguards will there be on the beach?
Answers
Answer:
291
Step-by-step explanation:
To find the number of lifeguards on the beach, we need to divide the total length of the beach by the distance between each lifeguard. We can use the formula: number of lifeguards = (total length of beach) / (distance between lifeguards) + 1 - where we add 1 to account for the lifeguard stationed at the end of the beach. Plugging in the given values, we have:
number of lifeguards = (17.4 km) / (0.06 km) + 1
= 290 + 1
= 291
Therefore, there will be 291 lifeguards on the beach.
Find the value of each variable
x =
y =
Answers
Answer:
x = 100°
x = 100°y = 85°
Step-by-step explanation:
X + 80° = 180°
x = 180° - 80°
x = 100°
y + 95° = 180°
y = 180° - 95°
y = 85°
a random variable x has a mean of 10 and a variance of 4. find p(6
Answers
A random variable x has a mean of 10 and a variance of 4. the answer is approximately 0.0228.
To solve this problem, we need to find the probability of the random variable x being less than 6.
Let Z be the standardized normal random variable, which is defined as:
Z = (X - μ) / σ
where X is the random variable, μ is the mean, and σ is the standard deviation.
We can use the standardized normal distribution to find the probability of Z being less than a certain value.
In this case, we have:
Z = (6 - 10) / 2 = -2
The probability of Z being less than -2 can be found using a standard normal distribution table or calculator. From the table, we find that:
P(Z < -2) = 0.0228
Therefore, the probability of x being less than 6 is:
P(X < 6) = P(Z < -2) = 0.0228
So the answer is approximately 0.0228.
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Rahul recorded the grade-level and instrument of everyone in the middle school
School of Rock below.
Seventh Grade Students
Instrument # of Students
Guitar
Bass
Drums
Keyboard
9
9
11
9
Eighth Grade Students
Instrument # of Students
Guitar
Bass
Drums
Keyboard
14
10
10
13
Based on these results, express the probability that a seventh grader chosen at
random will play an instrument other than guitar as a decimal to the nearest
hundredth.
Answers
Answer:
Step-by-step explanation:
The total number of seventh-grade students who play an instrument is 9 + 9 + 11 + 9 = 38. The number of seventh-grade students who play an instrument other than guitar is 9 + 11 + 9 = 29. Therefore, the probability that a seventh grader chosen at random will play an instrument other than guitar is 29/38 ≈ 0.76 (rounded to the nearest hundredth).
please help, and put explanation cuz i don’t understand this
Answers
Answer: 625
Step-by-step explanation:
On the bottom you have 2 cubes, that's your width
In front you have 5 cubes, that's your length
Going up, you have 4 hight
Each of those you have to multiply by 2 1/5 or 2.5
width = 2x2.5 =5
length = 5x2.5=12.5
height=10
Volume = length x width x height
=5x12.5x10=625
Find the sum.
8
12
152 +1:
?
?
?
Answers
Answer: 173
Step-by-step explanation:
8+12= 20
152+1= 153
153+20= 173
8
12
152
+1
-----
173
Write a single statement that assigns the values of all data members of time1 to the corresponding data members of time2. Given an array countryList consisting of 5 CountryTvWatch struct elements, write a statement that assigns the value of the 0th element's tvMinutes data member to the variable countryMin.
Answers
The statement that assigns the values of all data members of time1 to the corresponding data members of time2
countryMin = countryList[0].tvMinutes;
How to assign the values of all data members of time1 to the corresponding data members of time2?To assign the values of all data members of time1 to the corresponding data members of time2, you can use the following statement:
time2 = time1;
This statement will copy all the data members of time1 to time2 in a member-wise fashion, including any non-static data members such as integers or strings.
To assign the value of the 0th element's tvMinutes data member to the variable countryMin, you can use the following statement:
countryMin = countryList[0].tvMinutes;
This statement will access the 0th element of the countryList array, and retrieve the value of its tvMinutes data member, which will then be assigned to the countryMin variable.
Learn more about data members
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A box has 8 pens. Four are blue, one is green, and three are red. Three pens are drawn without replacement. If three pens aren’t the same color, then the pens are put back and the procedure (drawing three pens and replacing if not all the same) is repeated until three of the same color are obtained.
(a) How many times do you expect to perform this procedure until you get three of the same color?
(b) What is the probability that three of the same color will be obtained the sixth time the procedure is performed?
Answers
The expected number of times this procedure needs to be performed until three of the same color are 14 times and probability of getting three of the same color on the sixth trial is approximately 0.0032 or 0.32%.
(a) To calculate the expected number of times this procedure needs to be performed until three of the same color are obtained, we can use the concept of geometric distribution.
Let X be the number of times this procedure needs to be performed until three of the same color are obtained. The probability of getting three of the same color in any one trial is:
P(success) = P(3 blue) + P(3 green) + P(3 red)
= [C(4,3)/C(8,3)] + [C(1,3)/C(8,3)] + [C(3,3)/C(8,3)]
= 1/14
Therefore, the probability of not getting three of the same color in any one trial is:
P(failure) = 1 - P(success)
= 13/14
The expected number of trials until the first success is given by:
E(X) = 1/P(success)
= 14
So, on average, we expect to perform this procedure 14 times until three of the same color are obtained.
(b) The probability of getting three of the same color on the sixth trial is:
P(3 of same color on 6th trial) = P(failure)^5 * P(success)
= (13/14)^5 * (1/14)
≈ 0.0032
So, the probability of getting three of the same color on the sixth trial is approximately 0.0032 or 0.32%.
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