Pls help, Write the equation of the line in fully simplified slope-intercept form.

Answer:

[tex]7 {t}^{2} + 2t - 9 = [/tex]

[tex](7t + 9)(t - 1)[/tex]

The linearity assumption might be violated if the points on a scatter diagram seem to be best described by a curving line. The linearity assumption states that the relationship between the dependent variable and the independent variable is linear, meaning that as the independent variable increases or decreases, the dependent variable changes proportionally.

If the points on a scatter diagram form a curving line, it suggests that the relationship between the variables is not linear and the linearity assumption is violated. This could be due to a non-linear relationship between the variables or the presence of outliers. In order to accurately model the relationship between the variables, a non-linear regression model may need to be used. The other assumptions, including homoscedasticity (equal variance of errors), normality (normal distribution of errors), and stochastic x (random and independent values of the independent variable) may or may not be violated depending on the specific data and model used.

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The term var2 × var2 specifies that both the linear and quadratic terms for var2 should be included in the model.

Now, Let's an example code for fitting an MLR model with a linear and quadratic term for var2 using proc glm in SAS as;

proc glm data = your_dataset;

model var1 = var2 var2 × var2;

run;

Hence, In this code, your _ dataset refers to the name of the dataset that you are using.

The model statement specifies the variables in the model, where var1 is the dependent variable and var2 is the independent variable.

Thus, The term var2 × var2 specifies that both the linear and quadratic terms for var2 should be included in the model.

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f(g(x)) = √(18x² - 9) and g(f(x)) = 18(x+4) - 13.

f(g(x)) and g(f(x)) for the given functions f(x) = √(x+4) and g(x) = 18x² - 13. Please note that there seems to be a typo in the provided information (119(x) = 0), but I will answer the question based on the available functions.

To find f(g(x)), follow these steps:

1. Replace the x in f(x) with the entire g(x) function: f(g(x)) = √(g(x)+4)
2. Substitute the g(x) function into the expression: f(g(x)) = √((18x² - 13)+4)

The resulting function for f(g(x)) is: f(g(x)) = √(18x² - 9)

To find g(f(x)), follow these steps:

1. Replace the x in g(x) with the entire f(x) function: g(f(x)) = 18(f(x))² - 13
2. Substitute the f(x) function into the expression: g(f(x)) = 18(√(x+4))² - 13

The resulting function for g(f(x)) is: g(f(x)) = 18(x+4) - 13

So, f(g(x)) = √(18x² - 9) and g(f(x)) = 18(x+4) - 13.

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Answer:

Karen takes twenty hours to clean the building

Step-by-step explanation

Answer: True

Step-by-step explanation: When you need to analyze the data presented in PivotTables and PivotCharts, use a trendline to select the data to display and summarize.

True, before adding a trendline to a chart, it is essential to determine the data series that you want to analyze.

A trendline is a graphical representation of a pattern or direction within a given set of data, which can help in predicting future data points or understanding relationships between variables. By selecting the appropriate data series, you can effectively evaluate the trends and correlations within that specific dataset.

When creating a chart, you'll often work with multiple data series representing different variables or measurements. Identifying the relevant data series to analyze is crucial in order to obtain meaningful insights from the trendline. Once you have determined the data series of interest, you can then proceed to add a trendline that best fits the data points and provides a clear understanding of the underlying patterns.

In summary, it is true that determining the data series to analyze is an important step before adding a trendline to a chart, as it allows you to gain valuable insights and make informed decisions based on the observed trends.

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a. Concluding that baseball is more popular than soccer based on a poll at a championship event is not valid due to potential sample bias, self-selection bias, limited sample size, and question phrasing.

b. A better method to determine the more popular sport is by conducting a comprehensive, unbiased survey with a random sample of students in a neutral setting, using clear and unbiased questions

For accurate determination of the most favored sport, it is inadequate to derive conclusions based on a poll taken during championship events due to possible biases such as self-selection and limited sample sizes, ambiguous question phrasings, and unrepresentative sampling.

The improved approach to tackle this issue necessitates conducting comprehensive, objective surveys that prioritize random sampling techniques.

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The type of triangle is a Right isosceles triangle.

An isosceles triangle is a type of triangle with two angles equal and corresponding sides equal. A right angle triangle is a type of triangle in which one if it's sides is exactly 90°.

Therefore an Isosceles Right Triangle is a right triangle that consists of two equal length legs.

This means one side must be 90° and the other two angles must be equal.

Therefore the value of the other two angles =

2x +90 = 180

2x = 180-90

2x = 90

x = 90/2

x = 45°

therefore each side will be 45°

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To compute the double integral by changing the order of integration and making y the outer integration variable, the value of the double integral by changing the order of integration is 1/6.

∫∫ R f(x,y) dA
where R is the region of integration and dA represents the area element.
In this case, we are given the integral in problem 7:
∫ from 0 to 2√2 ∫ from y/2 to 2-y/2 (2x-y) dx dy
To change the order of integration, we need to rewrite the limits of integration for x and y in terms of the other variable.
First, let's sketch the region R. We see that R is the trapezoidal region bounded by the lines y = 0, y = 2, x = y/2, and x = 2 - y/2.
Next, let's write the limits of integration for x in terms of y. From the equations of the bounding lines, we can see that x ranges from y/2 to 2 - y/2. So, we have:
∫ from 0 to 2 ∫ from y/2 to 2-y/2 (2x-y) dx dy
= ∫ from 0 to 2 ∫ from y/2 to 2-y/2 2x dx dy - ∫ from 0 to 2 ∫ from y/2 to 2-y/2 y dx dy
= ∫ from 0 to 2 [x^2]y/2 to 2-y/2 dy - ∫ from 0 to 2 [y^2/2]y/2 to 2-y/2 dy
= ∫ from 0 to 2 ( (2-y/2)^2 - (y/2)^2 )/2 dy - ∫ from 0 to 2 ( (2-y/2)^3 - (y/2)^3 )/6 dy
= ∫ from 0 to 2 ( 3/4 - y/4 ) dy - ∫ from 0 to 2 ( 7/12 - y/8 ) dy
= [ 3y/4 - y^2/8 ] from 0 to 2 - [ 7y/12 - y^2/16 ] from 0 to 2
= ( 6 - 0 )/4 - ( 14/3 - 0 )/2
= 3/2 - 7/3
= 1/6
Therefore, the value of the double integral by changing the order of integration is 1/6.

To compute the double integral by changing the order of integration and making y the outer integration variable, you need to follow these steps:
1. Identify the given double integral: Since the actual integral from question 7 is not provided, I will use a general double integral as an example: ∬f(x, y)dxdy, where f(x, y) is a given function and the limits for x and y are given as a ≤ x ≤ b and c ≤ y ≤ d.
2. Change the order of integration: To change the order of integration, you will rewrite the double integral by swapping the differential terms and their respective limits. For our example, it becomes ∬f(x, y)dydx with limits of e ≤ y ≤ f and g ≤ x ≤ h. Note that you'll need to adjust the new limits according to the problem you're working on.
3. Evaluate the inner integral: Next, you'll integrate f(x, y) with respect to the inner integration variable (in this case, y). You'll get a function in terms of x: F(x) = ∫f(x, y)dy with limits e to f.
4. Evaluate the outer integral: Finally, integrate F(x) with respect to the outer integration variable (x) and use the limits g to h: ∫F(x)dx from g to h.
By following these steps, you will have successfully computed the double integral by changing the order of integration and making y the outer integration variable.

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The possible change in volume of the spherical golf ball is approximately 5.24 cubic millimeters with a relative error of 0.05%.

The volume of a sphere can be calculated using the formula V = (4/3)πr^3, where r is the radius of the sphere.

Given that the radius of the golf ball is 5 mm, with a possible measurement error of 0.1 mm, we can write:

r = 5 ± 0.1 mm

Using differentials, we can find the change in volume ΔV caused by a change in radius Δr:

ΔV = dV/dr * Δr

Taking the differential of the volume formula with respect to r, we get:

dV/dr = 4πr^2

Substituting r = 5 mm, we get:

dV/dr = 4π(5)^2 = 100π mm^2

Therefore, the possible change in volume is:

ΔV = (100π mm^2) * (0.1 mm) = 10π mm^3 ≈ 31.42 mm^3

The original volume of the golf ball is:

V = (4/3)π(5)^3 = 523.6 mm^3

Hence, the relative error in the volume calculation is:

ΔV/V * 100% = (31.42/523.6) * 100% ≈ 0.05%

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The value of the line integral is 18√32.

To evaluate the line integral ∫C y ds, where C is the straight-line segment x = 4t, y = (12-4t), z = 0 from (0,12,0) to (12,0,0), we need to find the parameterization of the curve and compute the integral.

First, let's parameterize the curve C with respect to t:
r(t) = <4t, 12 - 4t, 0>, where 0 ≤ t ≤ 3.

Now, let's find the derivative of r(t) with respect to t:
dr/dt = <4, -4, 0>.

Next, we'll calculate the magnitude of dr/dt:
|dr/dt| = [tex]\sqrt{(4^2 + (-4)^2 + 0^2)} = \sqrt{(32)}.[/tex]

Now, we can set up the line integral:
∫C y ds = ∫[0,3] (12 - 4t) |dr/dt| dt.

Substitute the magnitude of dr/dt:
∫C y ds = ∫[0,3] (12 - 4t) [tex]\sqrt{(32)[/tex] dt.

Integrate with respect to t:
∫C y ds = [tex]\sqrt{(32)} [12t - 2t^2][/tex] from 0 to 3.

Evaluate the definite integral:
∫C y ds = [tex]\sqrt(32) [(12(3) - 2(3)^2) - (12(0) - 2(0)^2)] = \sqrt(32) (36 - 18) = 18 \sqrt(32).[/tex]

So the exact answer is 18√32.

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The object would feel a force of approximately 5.35 Newtons if it is at a distance of 0.77 meters from the other charged object.

If the force between two charged objects varies inversely with the square of their distance, then we can use the following formula: F =

[tex]kQ1Q2 / r^2[/tex] where F is the force, [tex]Q1[/tex] and [tex]Q2[/tex] are the charges on the objects, r is the distance between them, and k is a constant of proportionality.

To find the value of k, we can use the given information that when the objects are at a distance of 0.64 meters apart, the force acting on them is 8.2 Newtons. Thus, we have: 8.2 =  [tex]kQ1Q2 / (0.64)^2[/tex]

To find the force when the objects are 0.77 meters apart, we can rearrange the equation and solve for F: F =  [tex]kQ1Q2 / (0.77)^2[/tex]

We can then substitute the value of k from the first equation and solve for [tex]F: F = (8.2 * (0.64)^2) / (0.77)^2 F[/tex] = 5.35 Newtons.

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The difference between the theoretical and experimental probability of rolling a sum of 4 with a pair of dice based on Tim's experiment is -11/300.

To find the difference between the theoretical and experimental probability of rolling a sum of 4 with a pair of dice based on Tim's experiment, we first need to determine both probabilities.

The theoretical probability can be calculated as follows:
1. There are a total of 6x6=36 possible outcomes when rolling two dice.
2. The combinations that result in a sum of 4 are (1, 3), (2, 2), and (3, 1).
3. There are 3 favorable outcomes for a sum of 4, so the theoretical probability is 3/36, which simplifies to 1/12.

The experimental probability is based on Tim's experiment, where he rolled the dice 25 times:
1. He recorded a sum of 4 on three of those rolls.
2. The experimental probability is the number of successful outcomes (rolling a 4) divided by the total number of trials (25 rolls). So, the experimental probability is 3/25.

Finally, find the difference between the theoretical and experimental probability:
1. The theoretical probability is 1/12, and the experimental probability is 3/25.
2. To compare them, find a common denominator (which is 300) and convert both probabilities: (25/300) - (36/300).
3. Subtract the probabilities: 25/300 - 36/300 = -11/300.

The difference between the theoretical and experimental probability of rolling a sum of 4 with a pair of dice based on Tim's experiment is -11/300.

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f(x) = (x + (5 - 3i) / 2)(x + (5 + 3i) / 2) these are complex conjugate pairs, which means that the polynomial has real coefficients.

To find the complex zeros of the polynomial function f(x) = x^2 + 5x + 4, we can use the quadratic formula:
x = (-b ± sqrt(b^2 - 4ac)) / 2a
In this case, a = 1, b = 5, and c = 4, so:
x = (-5 ± sqrt(5^2 - 4(1)(4))) / 2(1)
x = (-5 ± sqrt(9)) / 2
x = (-5 ± 3) / 2
So the complex zeros of f(x) are:
x = (-5 + 3i) / 2 and x = (-5 - 3i) / 2
To write f in factored form, we can use the zeros we just found:
f(x) = (x - (-5 + 3i) / 2)(x - (-5 - 3i) / 2)
f(x) = (x + (5 - 3i) / 2)(x + (5 + 3i) / 2)
Note that these are complex conjugate pairs, which means that the polynomial has real coefficients.

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The width of the waiting area is 95 feet if the length of the area is 120 feet. Thus, option A is correct.

The area of the roller-coaster = 11,400 square feet

Length of area = 120 feet

The shape of Smiler roller coaster is rectangular-shaped. The area of the roller coaster can be calculated by using the product of length and width. The width of the roller coaster is calculated by dividing the total area by length.

Mathematically, the formula is:

width = area/length

width = 11,400 / 120

width = 95 feets

Therefore, we can conclude that the width of the waiting area is 95 feet.

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Answer:

Step-by-step explanation:

Answer:

the mass of the wire is 125/4.

Step-by-step explanation:

To find the mass of the wire, we need to integrate the density function over the wire. Since the wire has the shape of the first-quadrant part of the circle with center at the origin and radius 5, we can write its equation as:

x^2 + y^2 = 25

Solving for y, we get:

y = sqrt(25 - x^2)

Since the wire is thin, we can assume that its thickness is negligible, so we can treat it as a 2D object. The mass of an infinitesimal element of the wire can be written as:

dm = density * dA

where dA is the infinitesimal area of the element. In polar coordinates, we have:

x = r cos(theta)

y = r sin(theta)

dA = r dr dtheta

Substituting and simplifying, we get:

dm = 2r^3 sin(theta) cos(theta) dr dtheta

To find the total mass of the wire, we need to integrate dm over the first-quadrant part of the circle:

m = ∫∫ 2xy dA

where the limits of integration are:

0 ≤ r ≤ 5

0 ≤ theta ≤ π/2

Substituting the expressions for x and y, we get:

m = ∫[0,π/2] ∫[0,5] 2r^3 sin(theta) cos(theta) dr dtheta

Integrating with respect to r first, we get:

m = ∫[0,π/2] sin(theta) cos(theta) ∫[0,5] 2r^3 dr dtheta

m = ∫[0,π/2] sin(theta) cos(theta) [r^4]_0^5 dtheta

m = ∫[0,π/2] 125 sin(theta) cos(theta) dtheta

m = 125/2 [sin^2(theta)]_0^π/2

m = 125/4

Therefore, the mass of the wire is 125/4.

Answer: 64 cm

Step-by-step explanation:

V = 384 cm ; 6 cubes

(6)(side^3)/6 = 384/6 (divide both sides by 6)

s^3 = 384/6

s^3 = 64

v = 1 = 64

s = 3sq root of 64

s = 4 cm

now, we're looking at the 4 squares that's gonna be unpainted

A = 4^2 = 16

= 4 (16)

A = 64 cm is the area of the unpainted surface

sorry for the late answer i hope this helps

good luckseu



The presence of dappled brown patches on a patient's cheek may indicate a condition called melasma. Melasma is a common skin condition that typically affects women and is associated with hormonal changes, sun exposure, and genetic factors.

Dappled brown patches on the cheek often suggest a condition called melasma. Melasma is a common skin disorder characterized by the development of dark, irregularly shaped patches on the skin. It typically affects women, especially those with darker skin tones, and is often associated with hormonal changes, such as during pregnancy or with the use of birth control pills. Sun exposure is another contributing factor to the development of melasma. Genetic factors also play a role, as it tends to run in families. Melasma is not a harmful or dangerous condition but can cause cosmetic concerns and affect a person's self-esteem.

To manage melasma, various treatment options are available. These include topical creams containing ingredients such as hydroquinone, tretinoin, or corticosteroids, which can help lighten the patches over time.

Chemical peels that involve the application of a chemical solution to exfoliate the skin and reduce hyperpigmentation may also be used. In some cases, laser therapy can be beneficial to target and break up the excess pigment in the affected areas.

It's important to note that melasma may recur, especially with sun exposure, so it's essential to protect the skin from the sun by wearing sunscreen and using protective clothing. Consulting a dermatologist is recommended to determine the most appropriate treatment approach for an individual case of melasma.

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Answer:

1. 13 Miles

2. 32

Step-by-step explanation:

1. 8+5=13

2. 40-8=32

The Z score for the firm would be B. 1.56.

To calculate the Z score for the potential borrowing firm using Altman's discriminant function, we'll need to substitute the given values of X1, X2, X3, X4, and X5 into the formula:

Z = 1.2 X1 + 1.4 X2 + 3.3 X3 + 0.6 X4 + 1.0 X5

By plugging in the values:

Z = 1.2(0.30) + 1.4(0) + 3.3(-0.30) + 0.6(0.15) + 1.0(2.1)

Now, perform the calculations:

Z = 0.36 + 0 - 0.99 + 0.09 + 2.1

Then, add the resulting numbers:

Z = 1.56

Altman's Z score is a widely-used financial tool that helps to predict the likelihood of a company going bankrupt. A Z score below 1.8 typically indicates a higher risk of bankruptcy, while a score above 3 suggests a lower risk. In this case, the firm's Z score of 1.56 suggests that it may be at a higher risk of bankruptcy, and further analysis should be conducted to determine the company's financial stability before extending credit or making an investment.

Therefore, the correct option is B.

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The indefinite integral is: (2x + 5)/2 - (5/2) * ln|2x + 5| + C

To evaluate the indefinite integral, ∫(2x)/(2x+5) dx, we can use a change of variables, also known as substitution. Let's set:

u = 2x + 5

Now, differentiate u with respect to x:

du/dx = 2

So, dx = du/2

Substitute u and dx in the original integral:

∫(2x)/(u) * (du/2) = ∫(u - 5)/(u) * (du/2)

Now, split the fraction:

∫(u/u - 5/u) * (du/2) = ∫(1 - 5/u) * (du/2)

Now, integrate with respect to u:

(1/2) * ∫(1 - 5/u) du = (1/2) * (u - 5 * ln|u|) + C

Now, substitute back the original variable, x:

(1/2) * ((2x + 5) - 5 * ln|2x + 5|) + C

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The area of the shaded region of the octagon is equal to 463 square to the nearest square units. Option B is correct.

Area of a regular polygon = 1/2 × apothem × perimeter

Area of the octagon = 1/2 × 13.28 × (8×11)

Area of the octagon = 584.32 square units

Area of the unshaded square = 11 × 11

Area of the unshaded square = 121 square units

Area of the shaded region = 584.32 - 121

Area of the shaded region = 463.32 square units

Therefore, the area of the shaded region of the octagon is equal to 463 square to the nearest square units.

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The average value of f(x) = 3x^2 + 5x on the interval [3, 7] is 109, and the value of C for which f(c) = f_average is approximately 3.99.

a) To determine the average value of f(x) on the interval [7, 3], you need to calculate the integral of the function over the interval and divide it by the width of the interval. First, we need to correct the interval [7, 3] to [3, 7] since the smaller number should come first. The width of the interval is 7 - 3 = 4.

∫(3x^2 + 5x) dx from 3 to 7 = [(x^3 + (5/2)x^2) evaluated from 3 to 7] = [(7^3 + (5/2)7^2) - (3^3 + (5/2)3^2)] = 436.

Now, we divide this by the width of the interval: f_average = 436/4 = 109.

b) To find the value of C, we need to solve f(c) = f_average on the interval [3, 7]. We are given that f(c) = f_average = 109, so we set the function equal to the average value and solve for c:

3c^2 + 5c = 109

3c^2 + 5c - 109 = 0

This quadratic equation can be solved using the quadratic formula, factoring, or other methods, but it does not factor easily. Using the quadratic formula, you will find two possible values for c: approximately 3.99 and -9.16. Since -9.16 is not within the interval [3, 7], the value of c is approximately 3.99.

So, On the range [3, 7], the average value of f(x) = 3x2 + 5x is 109, and the value of C for which f(c) = f_average is roughly 3.99.

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Complete question:

f(x) = 3x^2 + 5x in (7,3) a) Determine faverage in [7,3] b) Find the value of C, f(c)= fave in [7,3]

To construct a 99% confidence interval, we first need to determine the critical value. Thus, the 99% confidence interval for the population mean age is approximately 42.7 to 45.3. None of the given multiple-choice options exactly match this interval, but the closest one is 42.8 to 45.2.

Since we have a sample size of 33, we will use a t-distribution with degrees of freedom (df) = 32 (33-1). From the t-distribution table with 32 degrees of freedom and a confidence level of 99%, the critical value is approximately 2.718.
Next, we can use the formula for the confidence interval:
CI = P ± t* (s/√n)
Where:
- P is the sample mean (44 years)
- t* is the critical value (2.718)
- s is the sample standard deviation (3 years)
- n is the sample size (33)
Plugging in the values, we get:
CI = 44 ± 2.718 * (3/√33)
CI = 44 ± 1.05
So, the 99% confidence interval is (44 - 1.05, 44 + 1.05) or (42.95, 45.05). Therefore, the closest answer choice is 42.8 to 45.2.
To construct a 99% confidence interval for the population mean age, follow these steps:
1. Identify the sample mean (P), sample size (n), and sample standard deviation (s). In this case, P = 44 years, n = 33, and s = 3 years.
2. Find the critical value (z*) for a 99% confidence interval. You can find this value in a standard normal (z) distribution table or use a calculator. For a 99% confidence interval, z* ≈ 2.576.
3. Calculate the standard error (SE) of the sample mean using the formula: SE = s/√n. In this case, SE = 3/√33 ≈ 0.522.
4. Determine the margin of error (ME) by multiplying the critical value by the standard error: ME = z* × SE. In this case, ME = 2.576 × 0.522 ≈ 1.345.
5. Calculate the lower and upper bounds of the confidence interval using the sample mean and the margin of error:
  Lower bound = P - ME = 44 - 1.345 ≈ 42.655.
  Upper bound = P + ME = 44 + 1.345 ≈ 45.345.

Thus, the 99% confidence interval for the population mean age is approximately 42.7 to 45.3. None of the given multiple-choice options exactly match this interval, but the closest one is 42.8 to 45.2.

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To find the numerical value of abc, simply multiply the values of a, b, and c: 2 × 3 × 37 = 222, So the numerical value of abc is 222.

To find the prime factors of 888, we can start by dividing by 2 until we can no longer divide evenly. 888 divided by 2 is 444, which can be divided by 2 again to get 222, which can be divided by 2 again to get 111.

Now we need to find the prime factors of 111. We can divide by 3 to get 37, which is a prime number.

So the prime factors of 888 are 2, 2, 2, 3, and 37.

To write this in the form a3bc, we need to group the prime factors with the same exponent. So we have:

888 = 2^3 * 3^1 * 37^1

Therefore, a = 2, b = 3, and c = 37.

The numerical value of a b c is:

a * b * c = 2 * 3 * 37 = 222

To find the prime factorization of 888, we first need to break it down into its prime factors:

888 = 2 × 2 × 2 × 3 × 37

Now we can rewrite it in the form a^3bc:

888 = 2^3 × 3^1 × 37^1

Here, a = 2, b = 3, and c = 37.

To find the numerical value of abc, simply multiply the values of a, b, and c: 2 × 3 × 37 = 222, So the numerical value of abc is 222.

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If Lines m and n are parallel then the ∠8 measures 88 degrees

Lines m and n are parallel

∠7 measures 92 degrees

We have to find measure of  ∠8

The sum of angles 7 and 8 is 180,

so to find angle 8 you would subtract angle 7 from 180. So:

180 - 92

When ninety two is subtracted from one hundred eighty we get eighty eight degrees

= 88

Hence, if Lines m and n are parallel then the ∠8 measures 88 degrees

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In the figure below, lines m and n are parallel: (picture below)

In the diagram shown, ∠7 measures 92 degrees. What is the measure of ∠8?

8 degrees

88 degrees

92 degrees

180 degrees

You would need 120 square inches of paper to cover an entire prism with an area of 120 square inches.

In Mathematics and Geometry, the surface area of a rectangular prism can be calculated and determined by using this mathematical equation or formula:

SA = 2(WH + LW + LH)

Where:

Based on the information provided about the surface area of this rectangular prism, we can reasonably infer and logically deduce that you would need 120 square inches of paper to cover the entire prism.

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The percentage of the students are between 62 and 69 inches tall is 46.0%

From the question, we have the following parameters that can be used in our computation:

Mean = 69

Standard deviation = 4

Scores = between 62 and 69

So, the z-scores are

z = (62 - 69)/4 = -1,75

z = (69 - 69)/4 = 0

i.e. between a z-score of -1.75 and a z-score of 0

This is represented as

Probability = (-1.75 < z < 0)

Using a graphing calculator, we have

Probability =  0.45994

Approximate

Probability =  46.0%

Hence, the probability is 46.0%

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The integral by reversing the order of integration 1/2.

To sketch the region of integration, we need to look at the limits of integration. The integral involves sinx and s(2,y), which means that we are integrating over the region where sinx is defined and s(2,y) is non-negative.

The region of integration is therefore the area bounded by the x-axis, y-axis, the line x=π/2, and the curve y=2cos(x). To change the order of integration, we need to integrate with respect to y first.

This means that the limits of y will be from 0 to 2cos(x). The limits of x will be from 0 to π/2. So the new integral is ∫(from 0 to π/2) ∫(from 0 to 2cos(x)) sinx * s(2,y) dy dx.

To evaluate this integral, we can integrate with respect to y first, which gives us: ∫(from 0 to π/2) [cos(2y) - cos(4y)] / 2 * sinx dy dx. Integrating with respect to x, we get: [-cos(2y) + cos(4y)] / 4 * [-cos(x)] (from 0 to π/2) = (-1/4) [cos(2y) - cos(4y)]

Plugging in the limits of integration, we get: (-1/4) [1 - (-1)] = 1/2. Therefore, the value of the integral is 1/2.

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