Complete the square to re-write the Quadratic function in vertex form

Answer:

  d = 8 mm

Step-by-step explanation:

You want the length of the other diagonal of a rhombus when one of them has length 35 mm and the area of the rhombus is 140 mm².

The area of a rhombus is half the product of the lengths of the diagonals:

  A = 1/2(d1)(d2)

  140 mm² = 1/2(35 mm)(d)

  (280 mm²)/(35 mm) = d = 8 mm

The length of the missing diagonal is 8 mm.

The probability that z is between -2.33 and 2.33 for a standard normal distribution with a mean of 0 and standard deviation of 1 is approximately 0.9802, or 98.02%. Here, he probability that z is between -2.33 and 2.33 for a standard normal distribution with a mean of 0 and a standard deviation of 1, you'll need to use a standard normal distribution table or a calculator with a built-in z-table function.

Step-by-step explanation:
Step:1. Identify the given values: Mean (µ) = 0, Standard Deviation (σ) = 1, and the range of z-scores is between -2.33 and 2.33.
Step:2. Use a standard normal distribution table or a calculator with a built-in z-table function to find the probabilities associated with z = -2.33 and z = 2.33.
Step:3. Look up the probability of z = -2.33 in the table, which should be approximately 0.0099.
Step:4. Look up the probability of z = 2.33 in the table, which should be approximately 0.9901.
Step:5. Subtract the probability for z = -2.33 from the probability for z = 2.33 to find the probability of z being between these two values: P(-2.33 < z < 2.33) = P(z = 2.33) - P(z = -2.33) = 0.9901 - 0.0099 = 0.9802
The probability that z is between -2.33 and 2.33 for a standard normal distribution with a mean of 0 and standard deviation of 1 is approximately 0.9802, or 98.02%.

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The critical value for a 90% confidence interval can be found using a Z-table or T-table, depending on the sample size and known information about the population.

The 90% confidence interval for µ, the mean score for all students in the school district who are enrolled in gifted and talented programs.

To calculate the 90% confidence interval for µ, the mean score for all students in the school district who are enrolled in gifted and talented programs, you'll need the sample mean, sample standard deviation, and sample size.
The formula for the 90% confidence interval is:
(sample mean) ± (critical value) * (sample standard deviation / √sample size)

The confidence interval is a range of values that is likely to contain the true population parameter (in this case, the mean score for all students in the district). The 90% confidence interval means that if we were to repeat this study multiple times, we would expect the true population means to fall within this range of values 90% of the time.

Without additional information about the sample size, standard deviation, and mean score, I cannot provide you with the exact calculation for the confidence interval. However, the interpretation of the confidence interval would be something like this: "Based on the sample of students in gifted and talented programs, we can be 90% confident that the true population mean score falls within the range of X to Y." This would provide valuable information for educators and administrators who want to assess the performance of gifted and talented students in their district.

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Sample size of at least 23 is required to be 99% confident that our estimate of the population mean is within ±6.

To calculate the required sample size, we can use the formula:

n = (Zα/2 * σ / E)²
Where:
n = sample size
Zα/2 = the Z-score for the desired confidence level, which is 2.58 for 99%
σ = the population standard deviation (assumed to be given)
E = the desired margin of error, which is 6 in this case.

Substituting these values, we get:

n = (2.58 * σ / 6)²

Since the population standard deviation is not given, we cannot find the exact sample size. However, we can use an estimated value of σ based on prior knowledge or a pilot study.

For example, if we assume σ = 10, then the sample size required would be:

n = (2.58 * 10 / 6)² = 22.25 ≈ 23

Therefore, we would need a sample size of at least 23 to be 99% confident that our estimate of the population mean is within ±6.

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Answer:

9

Step-by-step explanation:

because if she can make 3 in 15minutes then 45 minutes is triple the time so triple the bracelets please give brainliest bye have a good day :D

The following parts can be answered by the concept of Combination.

a.  The total number of ways to award prizes is 100 x 99 x 98 = 970,200.

b. The total number of ways to award prizes in this scenario is 99 x 98 x 97 = 941,094.

c.  The total number of ways to award prizes in this scenario is 98 x 97 x 96 = 912,192.

d. The grand prize winner is a person holding ticket 8,11 or 23 is 3 x 99 x 98 = 29,178.

a) There are a total of 100 choices for the first prize, 99 choices for the second prize (since one person already won a prize), and 98 choices for the third prize (since two people already won prizes). So, the total number of ways to award prizes is 100 x 99 x 98 = 970,200.

b) If person holding the ticket 23 must get a prize, then there are only 99 choices for the first prize (since ticket 23 is already taken), 98 choices for the second prize, and 97 choices for the third prize. So, the total number of ways to award prizes in this scenario is 99 x 98 x 97 = 941,094.

c) If the person holding ticket 8 and the person holding ticket 11 must win prizes, then there are only 98 choices for the first prize (since tickets 8 and 11 are already taken), 97 choices for the second prize, and 96 choices for the third prize. So, the total number of ways to award prizes in this scenario is 98 x 97 x 96 = 912,192.

d) If the grand prize winner is a person holding ticket 8,11 or 23, then there are only 3 choices for the first prize (since only these three tickets are eligible for the grand prize), 99 choices for the second prize (since one person already won a prize and the grand prize winner is not eligible for the second prize), and 98 choices for the third prize (since two people already won prizes). So, the total number of ways to award prizes in this scenario is 3 x 99 x 98 = 29,178.

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To complete the table and find the derivative of the function y = (9x^(3/2))/x without using the quotient rule, we'll rewrite, differentiate, and simplify the function and get dy/dx =  27/2x^(1/2) - 9x^(1/2) .

Step 1: Rewrite the function
y = 9x^(3/2) * x^(-1) (multiply the x term in the denominator by -1 to rewrite the division as multiplication)
Step 2: Differentiate the function using the power rule (dy/dx = nx^(n-1))
dy/dx = 9(3/2)x^(3/2 - 1) - 9x^(3/2 - 1)
Step 3: Simplify the expression
dy/dx = 27/2x^(1/2) - 9x^(1/2)

Your answer: To find the derivative of the function y = (9x^(3/2))/x without using the quotient rule, we rewrote the function, differentiated it, and simplified the result to obtain the derivative dy/dx = 27/2x^(1/2) - 9x^(1/2).

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Answer:

∠ A = 60° , ∠ B = 30°

Step-by-step explanation:

using the cosine ratio in the right triangle

cosA = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AC}{AB}[/tex] = [tex]\frac{7}{14}[/tex] = [tex]\frac{1}{2}[/tex] , then

∠ A = [tex]cos^{-1}[/tex] ( [tex]\frac{1}{2}[/tex] ) = 60°

the sum of the 3 angles in Δ ABC = 180°

∠ A + ∠ B + ∠ C = 180°

60° + ∠ B + 90° = 180°

∠ B + 150° = 180° ( subtract 150° from both sides )

∠ B = 30°

The range for the southern cities is 145 mi² greater than the range for the northern cities.

We must determine the difference between the largest and smallest areas in each group in order to determine the range of the cities.

Minneapolis has the smallest area (58 miles2) and the largest (305 miles2) of the northern cities. Therefore, the northern cities' range is:

305 mi² - 58 mi² = 247 mi²

For the southern cities, the smallest area is 111 mi² (Orlando) and the largest area is 503 mi² (Los Angeles). So the range for the southern cities is:

503 mi² - 111 mi² = 392 mi²

To find how much greater the range is for the southern cities, we subtract the range for the northern cities from the range for the southern cities:

392 mi² - 247 mi² = 145 mi²

As a result, the cities in the south have a range that is 145 miles longer than the cities in the north.

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The dimensions of the rectangle with the largest possible area and a perimeter of 120 meters are 30 meters by 30 meters.

Explanation: -

To find the dimensions of a rectangle with a perimeter of 120 meters and the largest possible area, we need to follow these steps:

Step 1: Given the dimensions x and y, we have the area A = xy. then the perimeter of the rectangle is 2x + 2y = 120. Solving for y, we get y = 60 - x.

Step 2: To maximize the area A = xy, we substitute y with the expression from step 1: A(x) = x(60 - x) = 60x - x^2, where 0 < x < 60.

To find the maximum area, we can use calculus to find the critical points.

Step 3: Find the derivative of the area function, use the formula

d/dx(x^n) =nx^n-1

so that derivative is A'(x) = 60 - 2x.

Step 4: Set A'(x) = 0 and solve for x. In this case, 60 - 2x = 0, so x = 30.

Step 5: Plug x = 30 back into the expression for y: y = 60 - x = 60 - 30 = 30.

The dimensions of the rectangle with the largest possible area and a perimeter of 120 meters are 30 meters by 30 meters.

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Every odd composite integer is a pseudoprime to both the base 1 and the base -1.

A pseudoprime is a composite number that behaves like a prime number with respect to a particular base. In other words, a pseudoprime passes a primality test for a given base even though it is not actually prime.

Base 1:When we consider the base 1, any integer raised to the power of 1 is equal to the integer itself. Therefore, for any odd composite integer n, we have 1^(n-1) ≡ 1 (mod n) by Fermat's Little Theorem. This implies that n passes the primality test for base 1 and is a pseudoprime.

Base -1:When we consider the base -1, any integer raised to the power of an even number is always 1, and any integer raised to the power of an odd number is always -1. Therefore, for any odd composite integer n, we have (-1)^(n-1) ≡ -1 (mod n), as (n-1) is always an even number. This implies that n passes the primality test for base -1 and is a pseudoprime.

In conclusion, every odd composite integer is a pseudoprime to both the base 1 and the base -1, as it satisfies the conditions mentioned above.

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Answer:

The shape formed is a quadrilateral.

Step-by-step explanation:

The four points A(-1,0), B(0,2), C(4,0), and D(3,-2) can be used to form a quadrilateral. To identify the shape formed by these points, we can use the distance formula to find the length of each side of the quadrilateral, and then compare the side lengths.

AB: Distance between A(-1,0) and B(0,2)

= sqrt((0 - (-1))^2 + (2 - 0)^2)

= sqrt(1 + 4)

= sqrt(5)

BC: Distance between B(0,2) and C(4,0)

= sqrt((4 - 0)^2 + (0 - 2)^2)

= sqrt(16 + 4)

= sqrt(20)

= 2 sqrt(5)

CD: Distance between C(4,0) and D(3,-2)

= sqrt((3 - 4)^2 + (-2 - 0)^2)

= sqrt(1 + 4)

= sqrt(5)

DA: Distance between D(3,-2) and A(-1,0)

= sqrt((-1 - 3)^2 + (0 - (-2))^2)

= sqrt(16 + 4)

= 2 sqrt(5)

Since the length of AB is not equal to the length of CD, and the length of BC is not equal to the length of DA, we can conclude that the quadrilateral formed by these four points is not a parallelogram or a rhombus. Additionally, since the length of AB is not equal to the length of CD, we can conclude that the quadrilateral is not a kite.

By comparing the angles formed by the line segments AB, BC, CD, and DA, we can see that the angle at B is a right angle, while the other three angles are all acute angles. This indicates that the quadrilateral is a trapezoid. Specifically, it is a right trapezoid, since it has one right angle.

The average length of the queue (Lq) for an M/G/1 system with λ = 20, μ = 35, and σ = 0.005 is Lq = 0.3926 (option B).

To find the average length of the queue (Lq) in an M/G/1 system, we can use the Pollaczek-Khintchine formula:

Lq = (λ² * σ² + (λ/μ)²) / (2 * (1 - (λ/μ)))

Given λ = 20 (arrival rate), μ = 35 (service rate), and σ = 0.005 (standard deviation of service time):

1. Calculate λ/μ: 20/35 = 0.5714
2. Calculate 1 - (λ/μ): 1 - 0.5714 = 0.4286
3. Calculate λ² * σ²: (20²) * (0.005²) = 0.01
4. Calculate (λ/μ)²: (0.5714²) = 0.3265
5. Plug these values into the Pollaczek-Khintchine formula:

Lq = (0.01 + 0.3265) / (2 * 0.4286) = 0.3926 . (B)

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The statement "if a treatment is expected to decrease scores in a population with µ= 30, then the alternative hypothesis is µ ≤ 30." is true.

The alternative hypothesis (H1) represents a claim that contradicts the null hypothesis (H0). In this case, the null hypothesis would be that the treatment has no effect or increases scores, stated as µ≥30. The alternative hypothesis, µ≤30, suggests that the treatment is expected to decrease the population scores.

In hypothesis testing, we compare the observed data to these hypotheses to determine if there's enough evidence to support the claim made by the alternative hypothesis. By stating µ≤30, we are considering the possibility that the treatment may lead to a decrease in the population scores.

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Answer:

4

Step-by-step explanation:

(b + c)/2 = 6

b + c = 12

(a + b + c + d)/4 = 5

(a + 12 + d) = 20

a + d = 8

Hence,

the sum of the largest and smallest is 8. The mean has to be 8/2 = 4.

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To verify that a random 4x4 matrix A and its transpose AT have the same characteristic polynomial and eigenvalues, but not necessarily the same eigenvectors, follow these steps:

1. Construct a random 4x4 matrix A, such as:

A = | 1  2  3  4 |
     | 5  6  7  8 |
     | 9 10 11 12 |
     |13 14 15 16 |

2. Find the transpose of A (AT):

AT = | 1  5  9 13 |
        | 2  6 10 14 |
        | 3  7 11 15 |
        | 4  8 12 16 |

3. Compute the characteristic polynomial for A and AT.

4. Compare the eigenvalues obtained for A and AT. They should be the same with the same multiplicities.

5. Check the eigenvectors for A and AT. They may not be the same.

Repeat the same analysis for a random 5x5 matrix.

In summary, A and AT have the same characteristic polynomial and eigenvalues, but not necessarily the same eigenvectors. This holds true for both 4x4 and 5x5 matrices.

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The perimeter is 58.9

Here we have an isosceles triangle.

To find the length of the sides that aren't the base we can use a trigonometric equation.

sin(60°) = 4*√15/hypotenuse

hypotenuse = 4*√15/sin(60°) = 18.8

The side in the left also measures that.

Now we need the base, we can define the base as:

(b/2)² + (4√15)²  = 18.8²

b²/4 + 16*15 =  18.8²

b = √((18.8² - 16*15)*4)

b = 21.3

Then the perimeter is:

21.3 + 18.8 + 18.8 = 58.9

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The arrow symbolizes the directional connection from each member in set x to its corresponding member in set y. The members of set y are evident squares of their respective counterparts in set x.

Here is an arrow diagram to show the relation between the sets x and y, where y is the set of all elements in x squared:

     (1, 4, 9)

        / \

       /   \

      /     \

  1, 4, 9  -->  1, 4, 9, 16, 25, 36

       \     /

        \   /

         \ /

(3, 2, 1, -1, -2, -3)

      The arrow symbolizes the directional connection from each member in set x to its corresponding member in set y. The members of set y are evident squares of their respective counterparts in set x.

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Boundary conditions: u(0, t) = u0 , u(L, t) = u1

Initial condition: u(x, 0) = 0, for 0 ≤ x ≤ L

A function is a mathematical concept that describes a relationship between two sets of values, where each input value (also known as the argument) produces exactly one output value. It is often represented by a formula or an equation.

According to the given information:

The problem describes a one-dimensional heat conduction situation in which a rod of length L is placed on the x-axis, and its temperature distribution is being studied over time. The boundary conditions for the temperature function u(x,t) are given as:

The left end of the rod (x=0) is held at a temperature u0.

The right end of the rod (x=L) is held at a temperature u1.

The initial temperature of the rod is zero throughout its length (i.e., u(x,0) = 0 for all 0 ≤ x ≤ L).

To summarize:

Boundary conditions:

u(0, t) = u0

u(L, t) = u1

Initial condition:

u(x, 0) = 0, for 0 ≤ x ≤ L

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Yes, it is evidence that population means are different because it does not cover 0. Zinc lozenges appear to be effective in reducing the average number of days of symptoms.

(a) Calculate x1 − x2 difference in sample means.
x1 − x2 = 7.2 - 4.1 = 3.1 days

Compute the unpooled s.e.(x1 − x2) standard error of the difference in means. (Round your answer to four decimal places.)
s.e.(x1 − x2) = √((1.6^2 / 23) + (1.4^2 / 25)) = √(1.1133) = 1.0551 days

(b) Compute a 95% confidence interval for the difference in mean days of overall symptoms for the placebo and zinc lozenge treatments. Use the unpooled standard error and use the smaller of n1 − 1 and n2 − 1 as a conservative estimate of degrees of freedom. (Round the answers to two decimal places.)

Using the t-distribution table and the conservative degrees of freedom (22), the critical t-value is approximately 2.074.
CI = (x1 - x2) ± t * s.e.(x1 - x2)
CI = 3.1 ± 2.074 * 1.0551
CI = 3.1 ± 2.1886
CI = (0.91, 5.29) days

(c) Complete the following sentence interpreting the interval which was obtained in part (b).
With 95% confidence, we can say that in the population of cold sufferers represented by the sample, taking zinc lozenges would reduce the mean number of days of symptoms by somewhere between 0.91 and 5.29 days, compared with taking a placebo.

(d) Is the interval computed in part (b) evidence that the population means are different? Fill the blank in the following sentence.

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Answer: 8,600

Zach's gross capital gain can be calculated as follows:

Total proceeds from selling the stock = 200 shares x $43/share = $8,600

Total cost of buying the stock = 200 shares x $21.35/share = $4,270

Gross capital gain = Total proceeds - Total cost = $8,600 - $4,270 = $4,330

Therefore, Zach's gross capital gain from selling 200 shares of Goshen stock is $4,330.

The average rate of change of the function between the given values of x. y = 6 3x 0.5x2 between x = 4 and x = 6 is 8

To find the average rate of change of the function y = 6 + 3x + 0.5x^2 between x = 4 and x = 6, we need to find the difference between the y-values at x = 6 and x = 4, and divide by the difference between the x-values.
When x = 4, y = 6 + 3(4) + 0.5(4)^2 = 22
When x = 6, y = 6 + 3(6) + 0.5(6)^2 = 36
The difference in y-values is 36 - 22 = 14.
The difference in x-values is 6 - 4 = 2.
Therefore, the average rate of change of the function between x = 4 and x = 6 is 14/2 = 7.
So, the average rate of change of the function is 7 units per 1 unit change in x between the given values of x.
To find the average rate of change of the function y = 6 + 3x + 0.5x^2 between x = 4 and x = 6, follow these steps:
1. Evaluate the function at x = 4 and x = 6:
y(4) = 6 + 3(4) + 0.5(4^2) = 6 + 12 + 8 = 26
y(6) = 6 + 3(6) + 0.5(6^2) = 6 + 18 + 18 = 42
2. Calculate the average rate of change:
Average rate of change = (y(6) - y(4)) / (6 - 4) = (42 - 26) / 2 = 16 / 2 = 8
So, the average rate of change of the function between x = 4 and x = 6 is 8.

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The maximum amount of funds that Entrepreneur Bill should raise typically depends on various factors such as the growth potential of the business, the market demand, and the financial needs of the company.

However, a general rule of thumb is that entrepreneurs should not raise more than 25% to 30% of the company's worth in a single fundraising round.

So, if his company is worth $15 million, the maximum amount of funds that Entrepreneur Bill should raise is around $3.75 million. This will help him maintain a fair ownership stake in the company while also ensuring that he has enough funds to achieve his business goals.

It is important to note that this is just a rough estimate and every business is unique. Entrepreneur Bill should seek the advice of experienced investors or financial advisors to determine the appropriate amount of funds to raise for his specific business needs.

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The linear interpolation spline between points (0,1) and (1,0) for x=1/2 is y=1/2. The quadratic interpolation spline using (0,1), (1,0), and (5/2,0) is y=-8/5x^2 + 9/5x + 1 for x in [1/2,5/2].

To find the linear interpolation spline and quadratic interpolation spline, we can use the following formulas

For linear interpolation, the spline between data points (x1,y1) and (x2,y2) is given by

y = y1 + (y2-y1)/(x2-x1)*(x-x1)

For quadratic interpolation, the spline between data points (x1,y1), (x2,y2) and (x3,y3) is given by

y = y1*((x-x2)(x-x3))/((x1-x2)(x1-x3)) + y2*((x-x1)(x-x3))/((x2-x1)(x2-x3)) + y3*((x-x1)(x-x2))/((x3-x1)(x3-x2))

To find the linear interpolation spline, we can use the points (0,1) and (1,0) since they are the nearest neighbors to x = 1/2:

y = 1 + (0-1)/(1-0)*(1/2-0) = 1/2

Therefore, the linear interpolation spline is y = 1/2 for x in [1/2,1].

To find the quadratic interpolation spline, we need to use three neighboring points. We can use (0,1), (1,0), and (5/2,0) since they are the three nearest neighbors to x = 1/2. Substituting these values into the formula, we get

y = 1*((x-1)(x-5/2))/((0-1)(0-5/2)) + 0*((x-0)(x-5/2))/((1-0)(1-5/2)) + 0*((x-0)(x-1))/((5/2-0)(5/2-1))

Simplifying, we get:

y = -8/5x^2 + 9/5x + 1

Therefore, the quadratic interpolation spline is y = -8/5x^2 + 9/5x + 1 for x in [1/2,5/2].

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The required answer is 2y = x / (x + 2)

To find the equation of the slant asymptote for y = (x^2)/(2x + 2), we can perform long division or synthetic division to divide x^2 by 2x + 2. The result is y = (1/2)x - 1. Therefore, the equation of the slant asymptote is y = (1/2)x - 1.

The asymptotes most commonly encountered in the study of calculus are of curves of the form y = ƒ(x). These can be computed using limits and classified into horizontal, vertical and oblique asymptotes depending on their orientation. Horizontal asymptotes are horizontal lines that the graph of the function approaches as x tends to +∞ or −∞. As the name indicates they are parallel to the x-axis. Vertical asymptotes are vertical lines (perpendicular to the x-axis) near which the function grows without bound.

It seems there might be some typos in the given function. I believe you meant the function to be written as y = (x^2 + 2x) / 2y. To find the equation of the slant asymptote, follow these steps:

Step 1: Rewrite the given function with proper notation:
y = (x^2 + 2x) / (2y)

Step 2: Solve for x in terms of y:
2y = x^2 + 2x
2yx = x^2 + 2x

Step 3: Factor out x on the right side:
2yx = x(x + 2)

Step 4: Divide both sides by (x + 2):
2y = x / (x + 2)

This equation represents the slant asymptote of the given function.

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Answer:

54 square centimeters

Step-by-step explanation:

The area of a trapezium can be calculated by taking the average of the parallel sides and multiplying by the height. So, the area of this trapezium is:

(7 + 11) / 2 * 6 = 9 * 6 = 54 cm^2

Therefore, the area of the trapezium is 54 square centimeters.

Hope this helps!

Answer:

the area of the trapezium is 54 square centimeters.

Step-by-step explanation:

Given:

Parallel side 1 = 7cm

Parallel side 2 = 11cm

Height = 6cm

We can use the formula for the area of a trapezium, which is:

Area = (Sum of parallel sides / 2) × Height

Plugging in the values we have:

Area = ((7 + 11) / 2) × 6

Now, let's simplify the equation:

Area = (18 / 2) × 6

Area = 9 × 6

Area = 54

So, the area of the trapezium is 54 square centimeters.

The inverse Laplace transform of 1/s(s^2 + 36) using the convolution theorem is (1/6)sin(6t) + (1/6)cos(6t).

First, we need to find the Laplace transform of the given function 1/s(s^2 + 36). We can use the table of Laplace transforms to find that L{1/s(s^2 + 36)} = (1/6)sin(6t).

Next, we need to find the Laplace transform of the function f(t) = cos(6t)u(t), where u(t) is the unit step function. Using the table of Laplace transforms, we find that L{cos(6t)u(t)} = (s)/(s^2 + 36).

Now, we can apply the convolution theorem, which states that the inverse Laplace transform of the product of two functions in the frequency domain is equal to the convolution of their inverse Laplace transforms in the time domain.

The convolution of (1/6)sin(6t) and (s)/(s^2 + 36) is given by the integral of (1/6)sin(6(t - τ)) * (s)/(s^2 + 36) dτ from 0 to t.

To solve the integral, we can use partial fraction decomposition. We can express (s)/(s^2 + 36) as (A/s) + (B(s)/(s^2 + 36)), where A and B are constants to be determined.

Solving for A and B, we get A = 1/6 and B(s) = -s/6.

Substituting A and B(s) back into the integral and evaluating the integral, we get (1/6)sin(6t) + (1/6)cos(6t).

Therefore, the inverse Laplace transform of 1/s(s^2 + 36) using the convolution theorem is (1/6)sin(6t) + (1/6)cos(6t).

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According to the information, we can express the vector w as a linear combination of v1, v2, and v3 like this: w = -v1 - 5v2 - 3v3

We can express the vector w as a linear combination of v1, v2, and v3. Let's say:

w = c1 v1 + c2 v2 + c3 v3

We can find the values of c1, c2, and c3 using the dot product properties of orthogonal vectors. Since v1, v2, and v3 are orthogonal:

w ⋅ v1 = (c1 v1 + c2 v2 + c3 v3) ⋅ v1 = c1 (v1 ⋅ v1) = 6c1

w ⋅ v2 = (c1 v1 + c2 v2 + c3 v3) ⋅ v2 = c2 (v2 ⋅ v2) = 18c2

w ⋅ v3 = (c1 v1 + c2 v2 + c3 v3) ⋅ v3 = c3 (v3 ⋅ v3) = 25c3

Using the given values, we can set up a system of equations:

-6 = 6c1 + 0c2 + 0c3

-90 = 0c1 + 18c2 + 0c3

-75 = 0c1 + 0c2 + 25c3

Solving for c1, c2, and c3, we get:

c1 = -1

c2 = -5

c3 = -3

Therefore, we have:

w = -v1 - 5v2 - 3v3

Note: The solution is not unique, as any linear combination of v1, v2, and v3 that satisfies the given dot product conditions would work.

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In a right-skewed distribution, the correct answer is b. the median is less than the mean. In a right-skewed distribution, the data has a longer tail on the right side, indicating that there are more values greater than the mean. This causes the mean to be greater than the median.

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