The 'square' refers to a squared binomial that you get after...," the phrase refers to the process of multiplying a binomial by itself.
A composite function is created when one function becomes the new input for another function.
On page 7, the types of functions being compared are:
a) Exponential
b) Linear
c) Absolute Value
d) Quadratic
e) Cubic
f) Composite
In the context of function comparison, these types of functions are likely being analyzed and compared based on their properties, such as their graphs, equations, behavior, or specific characteristics. It is common to compare different types of functions to understand their similarities, differences, and applications in various contexts.
Regarding the completion of the statement, Specifically, when you multiply a binomial by itself, you obtain a squared binomial. For example, if you have the binomial (x + y) and multiply it by itself, you get the squared binomial (x + y)^2, which expands to x^2 + 2xy + y^2.
In other words, a composite function is formed by taking the output of one function and using it as the input for another function. This composition allows the combination of two or more functions into a new function, where the output of one function becomes the input for another function. The result is a composite function that exhibits the properties and behavior of the combined functions.
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Suppose This system of linear differential equations can be put in the form y' = P(t)y + g(t). Determine P(t) and g(t). P(t) = 3/1₁ 3/2₂2 g(t) = = t³y₁ + 6y₂ + sec(t), sin(t) y₁ + ty₂ - 4.
The system of linear differential equations is given as y₁' = 3y₁ + 3y₂² and y₂' = 2y₁ + t*y₂ - 4. By comparing it with the general form y' = P(t)y + g(t), we determine that P(t) = [[3, 3y₂²], [2, t]] and g(t) = [0, -4].
To determine the coefficient matrix P(t) and the forcing term g(t), we can compare the given system of linear differential equations with the general form y' = P(t)y + g(t).
The given system is:
y₁' = 3y₁ + 3y₂²
y₂' = 2y₁ + t*y₂ - 4
Comparing the first equation with the general form, we have:
P₁₁ = 3
P₁₂ = 3y₂²
g₁(t) = 0
Comparing the second equation with the general form, we have:
P₂₁ = 2
P₂₂ = t
g₂(t) = -4
Therefore, the coefficient matrix P(t) and the forcing term g(t) for the given system are:
P(t) = [[3, 3y₂²], [2, t]]
g(t) = [0, -4]
Note that the value of y₂ is not provided in the equation for g₂(t), so it remains as y₂ in the expression.
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fill in the blank to make the statement true.
1.( )+4 506-21 000=1 001
2.698-( )+711=1 388
3.109 006-( )-66 666=23 124
some questions I have already answered only that question make me confused
Define the linear transformation T: RR by T(v) Av. Find the dimensions of R" and Rm. A = [-2-22] 12 dimension of R" dimension of R
The linear transformation T: R^2 → R^2, defined by T(v) = Av, where A = [[-2, -2], [1, 2]], maps a two-dimensional vector space onto itself. The dimension of R^2 is 2.
In the given linear transformation T: R^2 → R^2, the transformation is defined as T(v) = Av, where A is the transformation matrix. The given matrix A = [[-2, -2], [1, 2]] represents the coefficients of the linear transformation. This means that the transformation T takes a two-dimensional vector v in R^2 and applies the matrix A to it.
The dimension of R^2 is 2, indicating that the vector space R^2 consists of all ordered pairs (x, y) where x and y are real numbers. In this case, the linear transformation T maps a vector in R^2 to another vector in R^2, so both the input and output dimensions are 2.
The dimension of R^n refers to the number of components or variables in a vector in R^n. For example, R^2 consists of vectors with two components, while R^3 consists of vectors with three components. In this case, the dimension of R^2 is 2 because each vector in R^2 has two components.
To summarize, the given linear transformation T: R^2 → R^2, with the matrix A = [[-2, -2], [1, 2]], maps a two-dimensional vector space onto itself. The dimensions of both R^2 and R^2 are 2, representing the number of components in the vectors of each space.
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What is the solution set for -4m ≥ 96?
Answer:
m [tex]\leq[/tex] 24
Step-by-step explanation:
-4m ≥ 96
(divide both sides by -4)
m [tex]\leq[/tex] 24
(sign flips because dividing by a negative)
If angle A is 76ᴼ what is its supplementary angle? What is its complementary angle?
Answer:
the complementary angle is 14°
the supplementary angle is 104°
Step-by-step explanation:
76+14=90
76+104=180
please help i cannot figure this out
4. Solve the Cauchy-Euler equation: x"y" - 2x*y" - 2xy +8y = 0 (12pts)
the general solution to the Cauchy-Euler equation x³y'" - 2x²y" - 2xy' + 8y = 0 is given by y(x) = c₁x² + c₂x⁻¹ + c₃x⁻¹ln(x) where c₁, c₂, and c₃ are constants.
To solve the Cauchy-Euler equation x³y'" - 2x²y" - 2xy' + 8y = 0, we'll make the substitution y = [tex]x^r[/tex], where r is a constant.
Let's differentiate y with respect to x:
y' = [tex]rx^{r-1}[/tex]
y" = [tex]r(r-1)x^{r-2}[/tex]
y'" = [tex]r(r-1)(r-2)x^{r-3}[/tex]
Now, substitute these derivatives into the original equation:
[tex]x^3(r(r-1)(r-2)x^{r-3} - 2x^2(r(r-1)x^{r-2}) - 2x(rx^{r-1}) + 8x^r = 0[/tex]
Simplifying, we get:
[tex]r(r-1)(r-2)x^r - 2r(r-1)x^r - 2rx^r + 8x^r = 0[/tex]
Combining like terms, we have:
r(r-1)(r-2) - 2r(r-1) - 2r + 8 = 0
Simplifying further, we get:
r³ - 3r² + 2r - 2r² + 2r + 8 - 2r + 8 = 0
r³ - 3r² + 8 = 0
To solve this cubic equation, we can try to find a rational root using the Rational Root Theorem or use numerical methods to approximate the roots.
By inspection, we find that r = 2 is a root of the equation. This means (r - 2) is a factor of the equation.
Using long division or synthetic division, we can divide r^3 - 3r^2 + 8 by (r - 2):
2 | 1 -3 0 8
| 2 -2 -4
_______________________
1 -1 -2 4
The quotient is r² - r - 2.
Factoring r² - r - 2, we get:
r² - r - 2 = (r - 2)(r + 1)
So the roots of the equation r³ - 3r² + 8 = 0 are: r = 2, r = -1 (repeated root).
Therefore, the general solution to the Cauchy-Euler equation x³y'" - 2x²y" - 2xy' + 8y = 0 is given by:
y(x) = c₁x² + c₂x⁻¹ + c₃x⁻¹ln(x)
where c₁, c₂, and c₃ are constants.
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Given question is incomplete, the complete question is below
Solve the Cauchy-Euler equation:
x³y'" - 2x²y" - 2xy' + 8y = 0
Emily's younger brother, Kenny, begged her to make him a superhero costume for Halloween this year, so of course Emily did! Emily sewed a 600-square-inch trapezoid-shaped cape with a big "K" on it. The length along the top of the cape was 24 inches, and the length along the bottom was 36 inches what is the height
Answer:
20 inches
Step-by-step explanation:
Since the cape is trapezoid shaped and has an area of 600 in², the area of a trapezoid is given by
A =1/2(a + b)h where a = length along the top of the cape = 24 in, b = length along the bottom of the cape = 36 in and h = height of the cape
So, h = 2A/(a + b)
= 2 × 600 in²/(24 in + 36 in)
= 1200 in²/60 in
= 20 in
So, the height of the cape is 20 inches
Can someone help me with this problem
Answer:
33
Step-by-step explanation:
well we know you have a right angle and a right angle is equivalent to 90 degrees and you also have angle 57 now we know a triangle is equal to 180 so take 90+57=180 add the 90 and 57 then subtract the anwser from 180
Consider a drug testing company that provides a test for marijuana usage. Among 308 tested subjects, results from 29 subjects were wrong. (either a false positive or a false negative). Use a 0.05 significance level to test the claim that less than 10 percent of the test results are wrong.
The required answer is based on the given data, we do not have sufficient evidence to support the claim that less than 10 percent of the test results are wrong at a 0.05 significance level.
To test the claim that less than 10 percent of the test results are wrong, use a hypothesis test with a significance level of 0.05. Let's define the null and alternative hypotheses:
Null Hypothesis (H0): The proportion of wrong test results is 10 percent or more.
Alternative Hypothesis (Ha): The proportion of wrong test results is less than 10 percent.
Use the binomial distribution to analyze the data. Let p be the true proportion of wrong test results. Since we want to test that the proportion is less than 10 percent, set p = 0.10 for the null hypothesis.
Given that 29 out of 308 tested subjects had wrong test results, calculate the sample proportion, denoted by p^, as follows:
p^ = 29 / 308 = 0.094
To conduct the hypothesis test, we can use the z-test for proportions. The test statistic is calculated as:
z = (p^ - p) / [tex]\sqrt{}[/tex]((p x (1 - p)) / n)
In this case, since we are testing whether the proportion is less than 10 percent, calculate a one-tailed z-test.
Substituting the values into the formula:
z = (0.094 - 0.10) / [tex]\sqrt{}[/tex]((0.10 x (1 - 0.10)) / 308)
Simplifying the expression:
z = -0.006 /[tex]\sqrt{}[/tex] (0.09 / 308)
z ≈ -0.006 / 0.017
Calculating the z-value:
z ≈ -0.353
To determine the critical value for a one-tailed test at a significance level of 0.05, we can consult the z-table or use statistical software. For a significance level of 0.05, the critical z-value is approximately -1.645 (since we are testing for less than 10 percent, in the left tail).
Since the calculated z-value (-0.353) is greater than the critical z-value (-1.645), we fail to reject the null hypothesis. There is not enough evidence to conclude that the proportion of wrong test results is less than 10 percent.
Therefore, based on the given data, we do not have sufficient evidence to support the claim that less than 10 percent of the test results are wrong at a 0.05 significance level.
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write the equation of the circle graph below?????
Answer:
(x+2)^2 + (y+2)^2 = 0.75^2
Step-by-step explanation:
equation of a circle in standard form: (x-h)^2 + (y-k)^2 = r^2
center: (-2, -2)
radius: 0.75
equation of the circle in provided graph: (x+2)^2 + (y+2)^2 = 0.75^2
HELPPP (will mark brainliest)
Vera wants to prove that any rectangle is also a parallelogram.
B
A
D
Select the appropriate rephrased statement for Vera's proof.
Choose 1 answer:
Answer:
B
Step-by-step explanation:
I did it on khan academy
a right triangle, with a height of 4m and a width of 1m. he wants to build a rectangular enclosure to protect himself. what is the largest the area of gottfried’s enclosure can be?
Given that, height of the right-angled triangle = 4m. Width of the right-angled triangle = 1m. Let's assume that the rectangular enclosure will be built at the base of the right-angled triangle. The area of the rectangular enclosure can be obtained using the formula, Area of rectangle = length × breadth. Length of the rectangle = height of the right-angled triangle = 4mLet the breadth of the rectangle be x, then the length is the width of the right-angled triangle + x = 1 + x Hence, the area of the rectangular enclosure is given by: Area = Length × Breadth= (1+x)×4= 4x + 4m²Now, the maximum area can be obtained by differentiating the above expression with respect to x and equating it to zero: dA/dx = 4 = 0x = -1. This is not a valid solution since we cannot have a negative breadth, hence we conclude that the area is maximum when the breadth of the rectangular enclosure is equal to the width of the right-angled triangle, i.e., when x = 1m. Thus, Area of the rectangular enclosure = Length × Breadth= (1+1)×4= 8 m². Hence, the largest the area of Gottfried’s enclosure can be is 8 m².
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find the missing side z
Answer:
Z=[tex]7\sqrt{2}[/tex] m
Step-by-step explanation:
This is a 45º-45º-90º triangle. That means the side lengths are x, x, and [tex]x\sqrt{2}[/tex].
In this case 14 m is equal to [tex]x\sqrt{2}[/tex]. Now solve for X, which is equal to Z.
The rest of the work is written down in the file attached
Don't forget the units though!
hope I could help
The triangle on the grid will be translated two units left.
On a coordinate plane, triangle A B C has points (negative 1, negative 1), (negative 1, negative 5), (0.5, negative 5).
Which shows the triangle when it is translated two units left?
On a coordinate plane, triangle A prime B prime C prime has points (1, negative 1), (1, negative 5), (2.5, negative 5).
On a coordinate plane, triangle A prime B prime C prime has points (negative 3, negative 1), (negative 3, negative 5), (negative 1.5, negative 5).
On a coordinate plane, triangle A prime B prime C prime has points (negative 1, 1), (negative 1, negative 3), (0.5, negative 3).
On a coordinate plane, triangle A prime B prime C prime has points (negative 1, negative 3), (negative 1, negative 7), (0.5, negative 7)
Given:
The vertices of a triangle are A(-1,-1), B(-1,-5), C(0.5,-5).
The figure is translated 2 units left.
To find:
The vertices and the diagram of the triangle after the given translation.
Solution:
if a figure is translated 2 units left, then
[tex](x,y)\to (x-2,y)[/tex]
Using the above rule, we get
[tex]A(-1,-1)\to A'(-1-2,-1)[/tex]
[tex]A(-1,-1)\to A'(-3,-1)[/tex]
Similarly,
[tex]B(-1,-5)\to B'(-1-2,-5)[/tex]
[tex]B(-1,-5)\to B'(-3,-5)[/tex]
And,
[tex]C(0.5, -5)\to C'(0.5-2,-5)[/tex]
[tex]C(0.5, -5)\to C'(-1.5,-5)[/tex]
So, the vertices of the triangle after the translation are A'(-3,-1), B'(-3,-5), C'(-1.5,-5).
Therefore, the correct option is B.
Answer:
B
Step-by-step explanation:
Use the Central Limit Theorem to find the mean and standard error of the mean of the indicated sampling distribution. The monthly rents for studio apartments in a certain city have a mean of $900 and a standard deviation of $180. If random samples of size 30 are drawn from the population, identify the mean, wx, and standard deviation, 7, of the sampling distribution of sample means with sample size n
Mean of the sampling distribution (wx): $900
Standard error of the mean (σx): Approximately $32.92
To find the mean and standard error of the mean of the sampling distribution, we can use the Central Limit Theorem.
The Central Limit Theorem states that for a large enough sample size, the sampling distribution of the sample means will be approximately normally distributed, regardless of the shape of the population distribution.
In this case, the population mean is μ = $900 and the population standard deviation is σ = $180. We are drawing random samples of size n = 30 from this population.
The mean of the sampling distribution (wx) will be equal to the population mean (μ), which is $900.
The standard deviation of the sampling distribution (σx), also known as the standard error of the mean, can be calculated using the formula:
σx = σ / √n
where σ is the population standard deviation and n is the sample size.
Substituting the given values, we have:
σx = $180 / √30
Calculating this value, we find:
σx ≈ $32.92
Therefore, the mean of the sampling distribution (wx) is $900, and the standard error of the mean (σx) is approximately $32.92.
Please note that the Central Limit Theorem assumes a sufficiently large sample size (typically n ≥ 30) for the approximation to hold.
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A piece of pizza with a diameter of 20 inches is eaten and m∠IPZ=45°. What is the perimeter of the piece of the pizza eaten in inches?
Answer:
Perimeter of pizza slice = 27.85 inches (Approx.)
Step-by-step explanation:
Given:
Diameter of pizza = 20 inches
So,
Radius of pizza slice = Diameter of pizza / 2
Radius of pizza slice = 20 / 2 = 10 inches
∠IPZ = 45°
Find:
Perimeter of pizza slice
Computation:
Perimeter of pizza slice = 2[Radius of pizza slice] + [θ/360][2πr]
Perimeter of pizza slice = 2[10] + [45/360][(2)(22/7)(10)]
Perimeter of pizza slice = 20 + [0.125][(2)(3.14)(10)]
Perimeter of pizza slice = 20 + [0.125][62.8]
Perimeter of pizza slice = 20 + 7.85
Perimeter of pizza slice = 27.85 inches (Approx.)
The perimeter of the slice of the pizza that is eaten, measured in inches, for the considered case, is 31.9635 inches.
How to find the relation between angle subtended by the arc, the radius and the arc length?[tex]2\pi^c = 360^\circ = \text{Full circumference}[/tex]
The superscript 'c' shows angle measured is in radians.
If radius of the circle is of r units, then:
[tex]1^c \: \rm covers \: \dfrac{circumference}{2\pi} = \dfrac{2\pi r}{2\pi} = r\\\\or\\\\\theta^c \: covers \:\:\: r \times \theta \: \rm \text{units of arc}[/tex]
For this case, we're given that:
Angle m∠IPZ=45°.Diameter of the circular pizza = 20 inchesNot using the above formula, but the concept, we know that:
360° covers full arc, which is [tex]2\pi r[/tex] inch lengthed long.45° is 360°/8, so it will cover [tex]2\pi r/8[/tex] inch long arc (the arc IZ).Since diameter of pizza = 20 inches, its radius r = 10 inches.
Thus, the length of the arc IZ = [tex]\dfrac{2 \times \pi \times 10}{8} \approx 1.9635 \: \rm inches.[/tex]
Perimeter of the slice of the pizza eaten = sum of the length of its boundaries = Length of arc IZ + length of line IP + length of line ZP
Since line IP and ZP are radius, thus:
Perimeter of the slice of the pizza eaten ≈ 1.9635 + 10 + 10 = 31.9635 inches.
Thus, the perimeter of the slice of the pizza that is eaten, measured in inches, for the considered case, is 31.9635 inches.
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21. Your local grocery store stocks rolls of bathroom tissue in single packages and in more economical 12-packs. You are trying to decide which to buy. The single package costs 45 cents and the 12-pack costs $5. You consume bathroom tissue at a fairly steady rate of one roll every three months. Your opportunity cost of money is computed assuming an interest rate of 25 percent and a fixed cost of $1 for the additional time it takes you to buy bathroom tissue when you go shopping. (We are assuming that you shop often enough so that you don't require a special trip when you run out.) a. How many single rolls should you be buying in order to minimize the annual holding and setup costs of purchasing bathroom tissue? b. Determine if it is more economical to purchase the bathroom tissue in 12-packs.
To minimize the annual holding and setup costs of purchasing bathroom tissue, you should buy single rolls of bathroom tissue. Purchasing the bathroom tissue in 12-packs is not more economical in this scenario.
To determine the optimal choice between buying single rolls and 12-packs of bathroom tissue, we need to consider the annual holding and setup costs.
a. To minimize the annual holding and setup costs, we need to compare the costs of buying single rolls versus 12-packs.
For single rolls:
Cost per roll = $0.45
Holding cost per roll per year = opportunity cost of money * cost per roll = 0.25 * $0.45 = $0.1125
Setup cost per purchase = $1
Consumption rate = 1 roll every 3 months = 4 rolls per year
For 12-packs:
Cost per pack = $5
Number of rolls in a 12-pack = 12
Holding cost per roll per year = 0.25 * ($5 / 12) = $0.1042
Setup cost per purchase = $1
To minimize the annual holding and setup costs, we need to compare the costs of purchasing the required number of single rolls and the cost of purchasing 12-packs.
b. Comparing the costs, it is more economical to purchase single rolls because the holding cost per roll per year is lower for single rolls ($0.1125) compared to 12-packs ($0.1042). Additionally, the setup cost is the same for both options ($1).
Therefore, to minimize the annual holding and setup costs, you should buy single rolls of bathroom tissue rather than 12-packs.
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Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the amount of beer poured by this filling machine follows a normal distribution with a mean of 12.29 ounces and a standard deviation of 0.04 ounce. Find the probability that the bottle contains between 12. 19 and 12.25 ounces.
The probability that the bottle contains between 12.19 and 12.25 ounces is 0.1525.
Given, mean (μ) = 12.29 ounces and standard deviation (σ) = 0.04 ounce.
We need to find the probability that the bottle contains between 12. 19 and 12.25 ounces.
So, let X be the amount of beer filled by the machine. Then, X ~ N(12.29, 0.04²)
Let Z be the standard normal random variable.
Then, Z = `(X - μ)/σ`
Substituting the values, we get,Z = `(X - 12.29)/0.04`
For X = 12.19, `Z = (12.19 - 12.29)/0.04 = -2.5`
For X = 12.25, `Z = (12.25 - 12.29)/0.04 = -1
`Now we need to find the probability of Z being between -2.5 and -1.P(Z lies between -2.5 and -1) = P(-2.5 < Z < -1)
We know that P(Z < -1) = 0.1587 and P(Z < -2.5) = 0.0062
From standard normal distribution table, we get
P(-2.5 < Z < -1)
= P(Z < -1) - P(Z < -2.5)P(-2.5 < Z < -1)
= 0.1587 - 0.0062 = 0.1525
Therefore, the probability that the bottle contains between 12.19 and 12.25 ounces is 0.1525.
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Find the surface area of a square pyramid with side length 6 mi and slant height 7 mi.
Answer:
total surface area (TSA) = [tex]2bs[/tex] + [tex]b^{2}[/tex]
length = 6 mi
slant height = 7 mi
∴ TSA = 2 × 6 × 7 + [tex]6^{2}[/tex]
= 84 + 36
= 120
The surface area of the square pyramid is 120 sq. mi.
Given:
side length (s) = 6 mi
slant height (l) = 7 mi
*image of a typical square pyramid is shown in the attachment below.
Recall:
Formula for surface area of square pyramid (SA) = [tex]A + \frac{1}{2} Pl[/tex]
Where,
[tex]A =[/tex] area of the base = [tex]s^2 = 6^2 = 36[/tex] sq mi
[tex]P =[/tex] perimeter of the base = [tex]4(s) = 4\times 6 = 24[/tex] mi
[tex]l =[/tex] slant height = 7 mi
Plug in the values
[tex]SA = 36 + \frac{1}{2}\times 24\times 7\\SA = 36 +84\\SA = 120[/tex]
The surface area(SA) of the square pyramid is 120 sq. mi
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Find the area of the circle. Round your answer to the nearest hundredth. diameter 3in
Area of circle = pi × r squared
A= 3.14....× (1.5×1.5)
A= 7.068583471
A= 7.07in( to nearest hundredth)
a land lady rented out her house for$240,000 for one year. During the year she paid 15%of the rent as income tax. she also paid 25% of the rent property tax and spent $10,000 on repairs. calculate the landlady's total expenses
Answer: 106,000 dollars
Step-by-step explanation:
She paid 36,000 dollars as income tax and 60,000 on the rent property tax and 96,000 dollars + 10,000 dollars is 106,000 dollars.
Line with a slope of -3 and passes through
point (-1,7)
Answer:
y=-3x+5.5
Step-by-step explanation:
The answer is Y=-3x+5.5 because we already know the slope which is -3. Now all you have to do is change the Y-Intercept. As you can tell the Y-Intercept is not a whole number. So you have to change it to a decimal to get the point that you want. You can put the last part of the equation as 5.5 or 5.55. It doesn't matter but 5.5 is more official. If you find any fault in my answer let me know. Thanks. Have a good day!
sketch the graph of a function that has a local maximum at 6 and is differentiable at 6.
To sketch the graph of a function that has a local maximum at 6 and is differentiable at 6, we can consider a function that approaches a maximum value at 6 and has a smooth, continuous curve around that point.
In the graph, we can depict a curve that gradually increases as we move towards x = 6 from the left side. At x = 6, the graph reaches a peak, representing the local maximum. From there, the curve starts to decrease as we move towards larger x-values.
The important aspect to note is that the function should be differentiable at x = 6, meaning the slope of the curve should exist at that point. This implies that there should be no sharp corners or vertical tangents at x = 6, indicating a smooth and continuous transition in the graph.
By incorporating these characteristics into the graph, we can represent a function with a local maximum at 6 and differentiability at that point.
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2. please help me i will give brainliest if ur right
Answer:
Is this high school math or middle school?.
Step-by-step explanation:
a²+b² = c²
8²+2²
↓ ↓
64+4
↓
square root 68 and it should give you 8.24 and then you round.
Please answer quickly!!
Which set of data is represented by the box plot?
Answer:
C?
Step-by-step explanation:
Jennifer ran 2 miles at the track on Tuesday. If one lap around the track is 1/4 of a mile, how many laps did she run?
Answer:
She would have ran 8 laps.
Step-by-step explanation:
4/4 = 1 mile so therefore she would need 8/8 for it to be 2 miles
Find the area of the circle. Round your answer to the nearest whole number, if necessary.
The circle is 20 in fully 10 half
area: about
in.2
Answer:
if you round of. 20 the answer is 10
Please help me it’s due soon-
Answer:
B-16
Step-by-step explanation:
jsjjsjdjsjsjxjsjsijsjdjdjjsjzjzijzjsndjidjsjsid
The diagonal of TV set is 39 inches long. length is 21 inches more than the height. Find the dimensions of the TV set a. The height of the TV set is ___ inches. b. The length of the TV set is ___ inches.
Let's assume the height of the TV set is h inches.
a. The height of the TV set is h inches.
Given that the length is 21 inches more than the height, the length can be represented as h + 21 inches.
b. The length of the TV set is h + 21 inches.
According to the given information, the diagonal of the TV set is 39 inches. We can use the Pythagorean theorem to relate the height, length, and diagonal:
(diagonal)^2 = (height)^2 + (length)^2
Substituting the values, we have:
39^2 = h^2 + (h + 21)^2
Expanding and simplifying:
1521 = h^2 + h^2 + 42h + 441
2h^2 + 42h + 441 - 1521 = 0
2h^2 + 42h - 1080 = 0
Dividing the equation by 2 to simplify:
h^2 + 21h - 540 = 0
We can solve this quadratic equation by factoring or using the quadratic formula. Factoring gives us:
(h - 15)(h + 36) = 0
So h = 15 or h = -36.
Since the height of the TV set cannot be negative, we discard h = -36.
Therefore, the height of the TV set is 15 inches.
Substituting this value back into the length equation, we have:
Length = h + 21 = 15 + 21 = 36 inches.
So, the dimensions of the TV set are:
a. The height of the TV set is 15 inches.
b. The length of the TV set is 36 inches.
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