For a confidence level of 80%, find the critical value. Round to 3 decimal places.

An equation that shifts the graph of the function f(x) = √x to the left 5 units is: f(x) = √(x + 5)

There are different methods of transformation of functions or graphs and they are:

1) Translation

2) Reflection

3) Dilation

4) Rotation

Now, we can shift a function upwards, downwards, to the left or right as the case may be.

In this case we want to shift the function to the left by 5 units.

Shifting the function 5 units to the left means translating the function 5 units along the x-axis. So we will add 5 to x to get:

f(x) = √(x + 5)

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The difference between the actual mean time taken to complete the quiz and the time Sam says is -0.2 minutes.

The mean, also known as the average, is a measure of central tendency that represents the sum of all values in a data set divided by the number of data points.

Mathematically, the mean is defined as:

Mean = (Sum of all values) / (Number of data points)

According to the given information:

To find the difference between the actual mean time taken to complete the quiz and the time Sam says, we can follow these steps:

Find the actual mean time taken to complete the quiz:

Add up all the given times: 13 + 16 + 8 + 9 + 12 + 14 + 20 + 36 + 11 + 5 + 13 + 16 + 8 + 9 + 12 + 14 + 20 + 36 + 11 + 5 = 236

Divide the sum by the number of data points (20, since there are 20 quiz times): 236 / 20 = 11.8 minutes

Calculate the difference between the actual mean time and the time Sam says:

Actual mean time taken to complete the quiz: 11.8 minutes

Time Sam says: 12 minutes

Difference = Actual mean time - Time Sam says = 11.8 - 12 = -0.2 minutes

So, the difference between the actual mean time taken to complete the quiz and the time Sam says is -0.2 minutes, indicating that Sam's estimate is 0.2 minutes (or 12 seconds) higher than the actual mean time.

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The value of evaluating the integral expression [tex]\int\limits^a_{-a} \int\limits^{\sqrt{a^2 - y^2}}_{-\sqrt{a^2 - y^2}} \int\limits^{\sqrt{a^2 -x^2 - y^2}}_{-\sqrt{a^2 - x^2 - y^2}} (x^2z + y^2z + z^3) dz dx dy[/tex] is 0

Given that

[tex]\int\limits^a_{-a} \int\limits^{\sqrt{a^2 - y^2}}_{-\sqrt{a^2 - y^2}} \int\limits^{\sqrt{a^2 -x^2 - y^2}}_{-\sqrt{a^2 - x^2 - y^2}} (x^2z + y^2z + z^3) dz dx dy[/tex]

To change to spherical coordinates, we need to express x, y, and z in terms of spherical coordinates: r, θ, and Φ .

In particular, we have

[tex]x &= r \sin\phi \cos\theta, \\y &= r \sin\phi \sin\theta, \\z &= r \cos\phi[/tex]

The Jacobian for the transformation is r² sin(Φ), and the limits of integration become

[tex]-a &\leq x \leq a \quad \Rightarrow \quad 0 \leq r \leq a, \\-\sqrt{a^2 - y^2} &\leq y \leq \sqrt{a^2 - y^2} \quad \Rightarrow \quad 0 \leq \phi \leq \frac{\pi}{2}, \\-\sqrt{a^2 - x^2 - y^2} &\leq z \leq \sqrt{a^2 - x^2 - y^2} \quad \Rightarrow \quad 0 \leq \theta \leq 2\pi.[/tex]

Substituting into the integral, we have

[tex]&\int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} (r^2\sin^2\phi\cos\theta\cdot r\cos\phi + r^2\sin^2\phi\sin\theta\cdot r\cos\phi + r^3\cos^3\phi) r^2 \sin\phi,d\theta d\phi dr \[/tex]

[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} (r^3\sin^2\phi\cos\theta\cos\phi + r^3\sin^2\phi\sin\theta\cos\phi + r^3\cos^3\phi) \sin\phi, d\theta d\phi dr[/tex]

[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} r^3\sin\phi\cos\phi (\sin^2\phi\cos\theta + \sin^2\phi\sin\theta + \cos^2\phi) , d\theta d\phi dr \[/tex]

[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} r^3\sin\phi\cos\phi (\sin^2\phi + \cos^2\phi) , d\theta d\phi dr \[/tex]

[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} r^3\sin\phi\cos\phi, d\theta d\phi dr \[/tex]

[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} 0, d\theta d\phi dr \&\quad = 0[/tex]

Therefore, the value of the integral is 0.

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The constant of proportionality for the graph given can be found to be 2 / 3.

A fixed numerical quantity that links two variables exhibiting direct proportionality is referred to as the constant of proportionality. This implies that when two factors are directly proportional, a stable ratio exists between them. The same value defines this figure and is identified as the constant of proportionality.

Pick a point on the graph such as ( 3 , 2 ) and ( 6, 4 ), the constant of proportionality would be:

= Change in y / Change in x

= ( 4 - 2) / ( 6 - 3 )

= 2 / 3

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The probability of drawing one card from a standard deck of cards and choosing a "face card" is 3/13.

What is probability?

Probability is a measure of the likelihood or chance of an event occurring, expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.

There are a total of 12 face cards in a standard deck of 52 cards (4 jacks, 4 queens, and 4 kings).

The probability of drawing a face card can be calculated by dividing the number of face cards by the total number of cards in the deck:

P(face card) = number of face cards / total number of cards

[tex]P(face \: card) = \frac{12}{52} \\ P(face \: card) = \frac{3}{13} [/tex]

Therefore, the probability is D. 3/13.

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The sample of given data is Sample 1: 1, 2, 3, 4, 5 Sample 2: 6, 7, 8, 9, 10

b)Sample 1: 1, 2, 3, 4, 5 Sample 2: 6, 7, 8, 9, 10

(a) An example of data with SS(between) = 0 and SS(within) > 0 could be the following:

Sample 1: 1, 2, 3, 4, 5

Sample 2: 6, 7, 8, 9, 10

Sample 3: 11, 12, 13, 14, 15

In this example, the means of each sample are all different from each other, but the grand mean (8) is equal to the mean of each sample. Therefore, there is no variability between the means of the samples, resulting in SS(between) = 0. However, there is still variability within each sample, resulting in SS(within) > 0.

(b) An example of data with SS(between) > 0 and SS(within) = 0 could be the following:

Sample 1: 1, 2, 3, 4, 5

Sample 2: 6, 7, 8, 9, 10

Sample 3: 11, 12, 13, 14, 15

In this example, the means of each sample are all the same (8), but the values within each sample are all different from each other. Therefore, there is variability between the means of the samples, resulting in SS(between) > 0. However, there is no variability within each sample, resulting in SS(within) = 0.

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The shape that would be seen if you were to take a cross-section parallel to the base of a rectangular prism is a RECTANGLE.

Here, we have,

we know that,

A regular prism is a base with a regular polygon, whereas a prism whose base is an irregular polygon is called an irregular prism.

so, we have,

This is because the cross-section of a rectangular prism will always be a rectangle.

The definition of a prism is that the cross-section parallel to the base will be uniform.

Hence, The shape that would be seen if you were to take a cross-section parallel to the base of a rectangular prism is a RECTANGLE.

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Answer:

It will take approximately 6.89 years for the investment to grow to $9737.

Step-by-step explanation:

We can use the formula for compound interest to solve this problem:

A = P(1 + r/n)^(nt)

Where:

A = the future value of the investment

P = the present value of the investment

r = the annual interest rate (as a decimal)

n = the number of times the interest is compounded per year

t = the number of years

We know that P = $7000, r = 0.034, n = 4 (since the interest is compounded quarterly), and we want to find t when A = $9737.

$9737 = $7000(1 + 0.034/4)^(4t)

Divide both sides by $7000:

1.391 = (1 + 0.034/4)^(4t)

Take the natural logarithm of both sides:

ln(1.391) = ln[(1 + 0.034/4)^(4t)]

Use the power rule of logarithms:

ln(1.391) = 4t * ln(1 + 0.034/4)

Divide both sides by 4 ln(1 + 0.034/4):

t = ln(1.391) / [4 * ln(1 + 0.034/4)]

Using a calculator, we find:

t ≈ 6.89 years

Therefore, it will take approximately 6.89 years for the investment to grow to $9737.

Answer:

75 - 25π.

Step-by-step explanation:

To find the work done by a force field on a particle moving along a curve, we use the line integral of the force field over that curve.

In this case, the curve is a circle of radius 5 centered at (0, 0, 3) lying on the plane z = 3. We can parameterize this curve using polar coordinates as:

r(t) = (5cos(t), 5sin(t), 3), where t goes from 0 to 2π.

The differential of the curve, dr(t), is given by:

dr(t) = (-5sin(t), 5cos(t), 0) dt

Now we need to calculate the work done by the force field F along this curve. The line integral of F over the curve is given by:

W = ∫ F · dr = ∫ (2x +y²Z)dx + (2x-4y+Z)dy + (x-2y-Z²)dz

Substituting x = 5cos(t), y = 5sin(t), and z = 3, we get:

W = ∫ (10cos(t) + 25sin²(t)·3) (-5sin(t))dt

∫ (10cos(t) - 20sin(t) + 3) (5cos(t))dt

∫ (5cos(t) - 10sin(t) - 9) (0)dt

Simplifying, we get:

W = -75∫sin(t)cos(t)dt + 50∫cos²(t)dt + 0

Using the trigonometric identities sin(2t) = 2sin(t)cos(t) and cos²(t) = (1 + cos(2t))/2, we can simplify this further:

W = -75∫(1/2)sin(2t)dt + 25∫(1 + cos(2t))dt

= -75·(1/2)·(-cos(2t))∣₀^(2π) + 25·(t + (1/2)sin(2t))∣₀^(2π)

= 75 - 25π

Therefore, the work done by the force field F on the particle moving along the circle of radius 5 centered at (0, 0, 3) lying on the plane z = 3 is 75 - 25π.

The total width for the figure is given as follows:

13 ft 2 in.

The total width for the figure is obtained applying the proportions in the context of the problem.

The measures are given as follows:

The sum of the measures is given as follows:

Each feet is composed by 12 inches, hence:

26 inches = 2 feet and 2 inches.

Hence the sum is given as follows:

11 + 2 = 13 feet and 2 inches.

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Answer:

The standard form of the equation of a circle with center at (h, k) and radius r is:

(x - h)^2 + (y - k)^2 = r^2

We are given that the center of the circle is (4, -1), so h = 4 and k = -1. We also know that the circle passes through the point (-4, 1), which means that the distance from the center of the circle to (-4, 1) is the radius of the circle.

The distance between two points (x1, y1) and (x2, y2) is given by the distance formula:

d = sqrt((x2 - x1)^2 + (y2 - y1)^2)

So the radius of the circle is:

r = sqrt((-4 - 4)^2 + (1 - (-1))^2) = sqrt(100) = 10

Now we can substitute the values of h, k, and r into the standard form equation of a circle:

(x - 4)^2 + (y + 1)^2 = 10^2

Expanding the equation gives:

x^2 - 8x + 16 + y^2 + 2y + 1 = 100

Simplifying and putting the equation in standard form, we get:

x^2 + y^2 - 8x + 2y - 83 = 0

Therefore, the equation in standard form of the circle with center at (4, −1) and that passes through the point (−4, 1) is:

x^2 + y^2 - 8x + 2y - 83 = 0

If will be positive if:

-24(a-t) > 0

-(a-t) > 0

-a + t > 0

t > a

Using derivatives, it is found that the particle is moving to the right for t > a , that is, values of t in the interval (a, ∞)

A particle is moving to the right if its velocity is positive.

The position of the particle is given by:

x(t) = 12(a -t)^2

The velocity is the derivative of the position, hence:

v(t) = -24(a-t)

If will be positive if:

-24(a-t) > 0

-(a-t) > 0

-a + t > 0

t > a

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The point P ( 1 , -12 ) lies on the graph of the function f ( x ) = 3x² - 6x - 9

Given data ,

Let the function be represented as f ( x )

Now ,

Let the point be P ( 1 , -12 )

And , to determine if the point (1, -12) is on the graph of the function f(x) = 3x² - 6x - 9, we can substitute x = 1 and y = -12 into the equation and check if it satisfies the equation.

Plugging in x = 1 into the equation, we get:

f(1) = 3(1)² - 6(1) - 9

f(1) = 3 - 6 - 9

f(1) = -12

Hence , when x = 1, f(x) = -12. Since f(1) = -12 and the given point is (1, -12), the point (1, -12) does lie on the graph of the function f(x) = 3x² - 6x - 9

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On adding the measurement of "4-boards", the total length of the 'four-boards" is  154 inches.

In order to add the lengths of these four boards, we first need to convert all the measurements to the same units.

So, Let us convert all the measurements to inches:

(i) 3 feet 4 inches = (3×12) + 4 = 40 inches,    ...because 1 feet = 12 inch;

(ii) 27 inches = 27 inches;

(iii) 1(1/2) yards = (1.5 × 3 × 12) = 54 inches;

(iv) 2(3/4) feet = (2.75 × 12) = 33 inches;

Now, we can add the lengths of the four-boards:

⇒ 40 + 27 + 54 + 33 = 154 inches,

Therefore, the total length of all four boards is 154 inches.

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The measure of m(ZR) would be 145°.

In geometry, a secant is a straight line that intersects a curve at two or more points. A secant line is used to study the properties of the curve such as its slope, curvature, and points of intersection with other curves. In the context of circles, a secant is a line that intersects a circle at two points, creating a chord. A secant is different from a tangent, which is a line that intersects a curve or circle at only one point and is perpendicular to the curve at that point.

Now we know that if Two secants intersect inside the circle.

Then according a property of intersecting chords.

m(ZR) - m(KV) = 2 (30°)

(5x+10)° - (3x+4)°  = 60°

(5x+10° - 3x - 4°)= 60°

2x+6°= 60°

2x = 60° - 6°

2x = 54°

x = 27°

Now put the value in m(ZR)

m(ZR) = (5x27+10)°

m(ZR) = 145°

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By putting the value it proved that csc²x+cot²x/csc⁴x-cot⁴x=1

Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles. Trigonometry is found all throughout geometry, as every straight-sided shape may be broken into as a collection of triangles.There are six type of Trigonometry

According to question,

we have prove that

(csc²x + cot²x) / (csc⁴x - cot⁴x) = 1

Now by manipulating the left-hand side of the equation using trigonometric identities.

Then, we can simplify the denominator using the identity:

a² - b² = (a + b)(a - b)

In this case we get , a = csc²x and b = cot²x, so:

csc⁴x - cot⁴x = (csc²x + cot²x)(csc²x - cot²x)

By substituting this expression into the given equation, we get:

(csc²x + cot²x) / [(csc²x + cot²x)(csc²x - cot²x)] = 1

By solving the numerator, we get:

1 / (csc²x - cot²x) = 1

Now, we can use the identity:

csc²x - cot²x = 1 / sin²x - cos²x / sin²x

= (1 - cos²x) / sin²x

= sin²x / sin²x

= 1

Substituting this expression back into the equation, we get:

1 / 1 = 1

Hence, we have proved that:

(csc²x + cot²x) / (csc⁴x - cot⁴x) = 1.

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The solutions to the equation (x - 5)² = 25 are x = 10 and x = 0.

An equation is a mathematical statement that shows that two expressions are equal. It consists of two sides separated by an equal sign (=). Each side of the equation can contain variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division.

It is a shape with four sides of equal length and four right angles. It is also a number multiplied by itself.

Solve the equation (x - 5)² = 25:

1. Take the square root of both sides of the equation to remove the exponent of 2 on the left side.

  √[(x - 5)²] = √25

2. Simplify the left side by removing the exponent of 2 and keeping the absolute value.

  |x - 5| = 5

3. Write two separate equations to account for both possible values of x when taking the absolute value.

  x - 5 = 5   or   x - 5 = -5

4. Solve for x in each equation.

x = 10   or   x = 0

  So the solutions to the equation (x - 5)² = 25 are x = 10 and x = 0.

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Answer: 15g-25h

Step-by-step explanation:

To use distributive property, you multiply 5x3g individually, and then 5x-5h individually.

You then add them.

So:

5(3g-5h)

=15h-25j

Answer:

7.95

Step-by-step explanation:

We can work percentage problems using the formula

P%x = y, where P is the percentage, x is the "of" value in the problem, and y is the "is" value in the problem.

Thus, in the formula, our p value is 0.30, our x ("of") value is 26.5 and we're trying to find our y ("is") value:

0.30 * 26.5 = y

7.95 = y

Therefore, 30% of 26.5 is 7.95

Answer:

The asymptote is 0.

Step-by-step explanation:

In [tex]f(x)=a^x+b[/tex], b is the asymptote.

Answer:

it's 0

Step-by-step explanation:

The mean amount of money the insurance company can expect to lose on each policy is $142.00 with a standard deviation of $1,243.67.

What is an insurance?

Let X be the random variable representing the amount of money the insurance company will lose on a policy. Then we can calculate the expected value (mean) of X and the standard deviation of X as follows:

Expected value:

E(X) = 30,000(1/1,000) + 10,000(1/250) + 0(1 - 1/1,000 - 1/250) = $142.00

The first term in the sum corresponds to the probability of a client dying (1/1,000) multiplied by the payout ($30,000), the second term corresponds to the probability of a client becoming disabled (1/250) multiplied by the payout ($10,000), and the third term corresponds to the probability of neither event occurring (1 - 1/1,000 - 1/250).

Standard deviation:

To calculate the standard deviation, we need to find the variance of X first:

Var(X) = [30,000 - E(X)]²(1/1,000) + [10,000 - E(X)]²(1/250) + [0 - E(X)]²(1 - 1/1,000 - 1/250)

= $1,547,797.56

The first term in the sum corresponds to the squared difference between the payout for a client dying and the expected payout, multiplied by the probability of a client dying, and so on for the second and third terms.

Then, we can take the square root of the variance to find the standard deviation:

SD(X) = √[Var(X)] = $1,243.67

Therefore, the mean amount of money the insurance company can expect to lose on each policy is $142.00 with a standard deviation of $1,243.67.

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The 7.34 cubic yards of concrete needed to pour the foundation walls, which is calculate the volume of the walls and then add the waste factor of 6%.

To find the volume of the concrete needed to pour the foundation walls, we first need to find the total area of the walls. We can do this by breaking it down into three sections

The two 26 ft x 1 ft walls

Area = 2 x (26 ft x 1 ft) = 52 sq ft

The two 42 ft x 1 ft walls

Area = 2 x (42 ft x 1 ft) = 84 sq ft

The 12 in x 15 in x 12 ft wall

First, we need to convert the dimensions to feet:

Length = 12 in ÷ 12 = 1 ft

Breadth = 15 in ÷ 12 = 1.25 ft

Height = 12 ft

Area = (1 ft + 1.25 ft) x 2 x 12 ft = 51 ft²

Total area of the walls = 52 sq ft + 84 sq ft + 51 sq ft = 187 sq ft

Now, we need to add the waste factor of 6% to this to account for any material that may be lost or wasted during the pouring process

Total area with waste factor = 187 sq ft + 6% of 187 sq ft = 198.22 sq ft

Finally, we need to calculate the volume of concrete needed, assuming a thickness of 1 ft

Volume = area x thickness = 198.22 sq ft x 1 ft = 198.22 cubic ft

Since 1 cubic yard is equal to 27 cubic feet, we can convert the volume to cubic yards

Volume in cubic yards = 198.22 cubic ft ÷ 27 = 7.34 cubic yards

Therefore, we need 7.34 cubic yards of concrete to pour the foundation walls with a 6% waste factor.

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The simplest form of the expression 6x - 4y - 2x / 2 is 5x - 4y.

What is Simplest form?

In mathematics, simplest form refers to the expression that has been simplified or reduced as much as possible. This means that no further simplification or reduction can be done without changing the value of the expression.

The expression 6x - 4y - 2x / 2 can be simplified using the order of operations (PEMDAS) as follows:

6x - 4y - 2x / 2

= 6x - 4y - x (since 2x / 2 = x)

= 5x - 4y

Therefore, the simplest form of the expression 6x - 4y - 2x / 2 is 5x - 4y.

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The value of the derivative of variable x with respect to parameter t is equal to dx / dt = - 1 / 2.

In this problem we need to find the derivative of variable x with respect to parameter t. This can be done by the following expression:

dy / dx = (dy / dt) / (dx / dt)

If we know that y = 4 · x² + 4, x = - 1 and dy / dt = 4, then the exact value of dy / dt is:

dy / dx = 8 · x

[8 · (- 1)] = 4 / (dx / dt)

- 8 = 4 / (dx / dt)

dx / dt = - 1 / 2

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Each pair of angles has been identified as adjacent, complementary, supplementary, or vertical angles as shown in the image attached below.

In Mathematics and Geometry, a complementary angle can be defined as two (2) angles or arc whose sum is equal to 90 degrees (90°);

55 + 35 = 90°

In Mathematics and Geometry, adjacent angles can be defined as two (2) angles that share a common vertex and a common side. This ultimately implies that, both angles 1 and 2, 5 and 6, 9 and 10 are pair of adjacent angles.

In conclusion, the linear pair theorem is sometimes referred to as linear pair postulate (supplementary angle) and it states that the measure of two angles would add up to 180° provided that they both form a linear pair.

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Answer:  To show that the equation "3sin () tan () = 5cos () - 2" is equivalent to the equation "(4 cos() - 3)(2 cos () + 1) = 0", we need to simplify the first equation and check if it has the same solutions as the second equation.

Starting with the first equation:

3sin () tan () = 5cos () - 2

Using the identity tan () = sin () / cos (), we can write:

3sin () (sin () / cos ()) = 5cos () - 2

Multiplying both sides by cos (), we get:

3sin^2 () = (5cos () - 2)cos ()

Using the identity sin^2 () + cos^2 () = 1 and rearranging, we get:

3(1 - cos^2 ()) = 5cos^2 () - 2cos ()

Expanding and rearranging, we get:

5cos^2 () - 2cos () - 3 + 3cos^2 () = 0

Simplifying, we get:

8cos^2 () - 2cos () - 3 = 0

Now, we can use the quadratic formula to solve for cos ():

cos () = [2 ± sqrt(2^2 - 4(8)(-3))]/(2(8))

cos () = [2 ± sqrt(100)]/16

cos () = (1/4) or (-3/8)

Substituting these values back into the original equation, we can verify that they satisfy the equation.

Now, let's consider the second equation:

(4 cos() - 3)(2 cos () + 1) = 0

This equation is satisfied when either 4cos() - 3 = 0 or 2cos() + 1 = 0.

Solving for cos() in the first equation, we get:

4cos() - 3 = 0

cos() = 3/4

Substituting this value back into the original equation, we can verify that it satisfies the equation.

Solving for cos() in the second equation, we get:

2cos() + 1 = 0

cos() = -1/2

Substituting this value back into the original equation, we can also verify that it satisfies the equation.

Therefore, we have shown that the equation "3sin () tan () = 5cos () - 2" is equivalent to the equation "(4 cos() - 3)(2 cos () + 1) = 0".

Answer:

I worked this out & I got a horribly messy number, but if you still want it, here you go.

The answer I got is 49.833333333333333333333333333333, or
49 833333333333333333333333333333/100000000000000000000000000000.

I could not simplify it. Hopefully, your teacher accepts this.

let's firstly convert the mixed fractions to improper fractions, then multiply.

[tex]\stackrel{mixed}{8\frac{2}{3}}\implies \cfrac{8\cdot 3+2}{3}\implies \stackrel{improper}{\cfrac{26}{3}}~\hfill \stackrel{mixed}{5\frac{3}{4}} \implies \cfrac{5\cdot 4+3}{4} \implies \stackrel{improper}{\cfrac{23}{4}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{26}{3}\cdot \cfrac{23}{4}\implies \cfrac{26}{4}\cdot \cfrac{23}{3}\implies \cfrac{13}{2}\cdot \cfrac{23}{3}\implies \cfrac{299}{6}\implies 49\frac{5}{6}~ft^2[/tex]

The speed s, in feet per second, of the car before the brakes were applied is,

⇒ s = 67.5 m/s

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

Skid mark for the car = 150 ft

And, given equation of speed and distance is,

⇒ s = √24d

Where, d is the distance

And, s is the speed  

Hence, We get;

s = √ 24 × 150

s = √3600

s = 60 m/s

Thus, The speed of the car before it stop is equal to s = 60 m/s

Learn more about the multiplication visit:

https://brainly.com/question/10873737

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