A professor of political science wants to predict the outcome of a school board election. Three candidates Ivy (I), Bahrn (B), and Smith (S), are running for one position. There are three categories of voters: Left (L), Center (C), Right (R). The candidates are judged based on three factors: educational experience (E ), stand on issues (S), and personal character (P ). The following are the comparison matrices for the hierarchy of left, center, and right. 2 3 2 3 1 2 AHP was then used to reduce these matrices to the following relative weights eft Center Right Candidate Ivy Smith. 2 Bahr. 5. 1. 2 4. 45 33 4. 255 Determine the winning candidate, assess the consistency of the decision

The completed equation is:

2 + 7 = a - 2

a = 11.

We are given the following equation:

2 + b = a - 2

We need to select the correct number from the drop-down menu to complete the equation.

From the first drop-down menu, we select 7.

2 + 7 = 9

From the second drop-down menu, we select 2.

2 + b = 9 - 2

2 + b = 7

Subtracting 2 from both sides, we get:

b = 5

Therefore, from the third drop-down menu, we select 5.

So, the completed equation is:

2 + 7 = 5 - 2

9 = 3

This is not a true statement, so there must be an error in one of our selections. Upon closer inspection, we can see that the correct number to select from the first drop-down menu is 5, not 7.

2 + 5 = 7

Now, substituting 5 for b in the original equation, we get:

2 + 5 = a - 2

7 + 2 = a

a = 9

Therefore, from the third drop-down menu, we select 9.

So, the completed equation is:

2 + 5 = 9 - 2

7 = 7

This is a true statement, so we have selected the correct numbers to complete the equation.

To know more about equation refer here:

https://brainly.com/question/29657983

#SPJ11

In the given question, if y, p and q vary jointly and p is 14 when y and q are equal to 2 and  p and y are equal to 7, we get q is equal to 14 using the  joint variation formula.

To solve this problem, we need to use the formula for joint variation, which states that y, p, and q vary jointly if there exists a constant k such that ypk = kq.

In this case, we know that when y=2 and q=2, p=14. So we can set up the equation: 2*14*k = 2kq

Simplifying this, we get: 28k = 2kq
Dividing both sides by 2k, we get: 14 = q
So when p=7 and y=7, we can use the same equation: 7*14*k = 7kq

Simplifying this, we get: 98k = 7kq
Dividing both sides by 7k, we get: q = 14

Therefore, when p and y are equal to 7, q is equal to 14.

To know more about joint variation refer here:

https://brainly.com/question/29181669#

#SPJ11

a) The probability that exactly five men will still be alive in 20 years is approximately 0.024.

b) The probability that more than eight men will still be alive in 20 years is approximately 0.057.

c) The probability that at least two men will still be alive in 20 years is approximately 0.999.

To calculate the probabilities, we can use the binomial distribution formula, where n is the number of trials, p is the probability of success, and x is the number of successes. Therefore,

a) P(X = 5) = (10 choose 5) * (0.69)⁵ * (0.31)⁵ ≈ 0.024

b) P(X > 8) = P(X = 9) + P(X = 10) = [(10 choose 9) * (0.69)⁹ * (0.31)¹] + [(10 choose 10) * (0.69)¹⁰ * (0.31)⁰] ≈ 0.057

c) P(X ≥ 2) = 1 - P(X = 0) - P(X = 1) = 1 - [(10 choose 0) * (0.69)⁰ * (0.31)¹⁰] - [(10 choose 1) * (0.69)¹ * (0.31)⁹] ≈ 0.999

In summary, we have used the binomial distribution formula to calculate the probability that exactly five men, more than eight men, and at least two men will still be alive in 20 years, given that the probability that a man of this particular age will be alive in 20 years is 0.69.

Learn more about probability

https://brainly.com/question/24756209

#SPJ4

The 95% confidence interval for the U.S. Cesarean delivery rate for this year is approximately (0.3314, 0.4886) or 33.14% to 48.86%.

To estimate the U.S. Cesarean delivery rate for this year with 95% confidence using the provided information, we can construct a confidence interval for the population proportion.

Given:

Population proportion estimates from the NVS Report for 2011: p = 0.328 (32.8%)

Sample size: n = 100

Number of C-sections in the sample: x = 41

First, we need to check if a normal model is appropriate for the sample proportion. For this, we can verify if the sample size is sufficiently large and if both np and n(1-p) are greater than 10.

np = 100 * 0.328 = 32.8

n(1-p) = 100 * (1 - 0.328) ≈ 67.2

Since both np and n(1-p) are greater than 10, we can assume that the conditions for a normal model are met.

Now, we can calculate the confidence interval using the sample proportion and the critical value corresponding to a 95% confidence level.

Sample proportion (p-hat) = [tex]\frac{x }{ n}[/tex] =[tex]\frac{ 41 }{ 100 }[/tex]= 0.41

The critical value for a 95% confidence level can be obtained from a standard normal distribution or a Z-table. In this case, the critical value is approximately 1.96.

The margin of error (E) can be calculated as:

E = Z * [tex]\sqrt((\frac{p-hat * (1 - p-hat))} { n})[/tex]

E = 1.96 * [tex]\sqrt((\frac{0.41 * (1 - 0.41))}{ 100)}[/tex]

E ≈ 0.0786

Finally, we can construct the confidence interval by subtracting and adding the margin of error from the sample proportion.

Confidence interval = p-hat ± E

Confidence interval = 0.41 ± 0.0786

Therefore, the 95% confidence interval for the U.S. Cesarean delivery rate for this year is approximately (0.3314, 0.4886) or 33.14% to 48.86%.

Note: It's important to consider that this calculation assumes the sample is representative of the U.S. population and that the conditions for a normal model are satisfied. Additionally, the estimate from the NVS Report for 2011 is used as the population proportion.

Learn more about the delivery rate for this year.

brainly.com/question/11805232

#SPJ11

Using probability, we can find probability of the random variable, x falling in the shaded region as to be 5/8.

Probability is the ratio of favourable outcomes to all other potential outcomes of an event. The symbol x can be used to express the quantity of successful outcomes for an experiment with 'n' outcomes. The following formula can be used to determine an event's probability.

Positive Outcomes/Total Results = x/n = Probability(Event)

Let's look at a simple example to better understand probability. Imagine that we need to predict whether it will rain or not. The right response to this question is "Yes" or "No." Whether it rains or not is uncertain. Probability is used to predict the outcomes when tossing coins, rolling dice, or drawing cards from a deck of cards.

Here in the question,

Total region = 8.

Shaded region = 5

So, probability of falling in the shaded region = 5/8

To know more about probability, visit:

https://brainly.com/question/29251004

#SPJ1

The central angle is approximately 51.6 degrees.

To solve this problem, we can use the formula for arc length of a circle:

arc length = θ × r

where θ is the central angle in radians, and r is the radius of the circle.

We know that the arc length is 4.5 feet and the radius is 5 feet. So we can rearrange the formula to solve for θ:

θ = arc length / r

θ = 4.5 / 5

θ = 0.9 radians

To find the central angle in degrees, we can convert radians to degrees by multiplying by 180/π:

θ = 0.9 × (180/π)

θ ≈ 51.6 degrees

Therefore, the central angle is approximately 51.6 degrees.

Learn more about Length

brainly.com/question/2497593

#SPJ11

Answer:

c

Step-by-step explanation:

Using the value of λ = (18 + √130)/18, we get: x = 3λ ≈ 4.895 y = 3λ - 3 ≈ 5.316 So the point on the curve that is furthest from P is approximately (4.895, 5.316).

To use the method of Lagrange multipliers, we first need to define our objective function and our constraint. Our objective function is the distance between the point P and a point on the curve, which can be expressed as:

f(x, y) = (x - 0)^2 + (y - 3)^2 = x^2 + (y - 3)^2

Our constraint is the equation of the curve:

g(x, y) = x^2 + y^2 - 6x + 7 = 0

To use the method of Lagrange multipliers, we need to introduce a new variable λ and solve the following system of equations:

∇f = λ∇g
g(x, y) = 0

where ∇f and ∇g are the gradients of f and g, respectively.

Taking the partial derivatives of f and g with respect to x and y, we have:

∂f/∂x = 2x
∂f/∂y = 2(y - 3)
∂g/∂x = 2x - 6
∂g/∂y = 2y

Setting ∇f equal to λ∇g, we have:

2x = λ(2x - 6)
2(y - 3) = λ(2y)

Simplifying these equations, we get:

x = 3λ
y = 3λ - 3

Substituting these expressions into the equation of the curve, we get:

(3λ)^2 + (3λ - 3)^2 - 6(3λ) + 7 = 0

Simplifying this equation, we get:

18λ^2 - 36λ + 13 = 0

Solving for λ, we get:

λ = (18 ± √130)/18

Substituting these values of λ into our expressions for x and y, we get the coordinates of the points on the curve that are closest to and furthest from the point P.

To find the point that is closest to P, we need to minimize the objective function f(x, y). Using the value of λ = (18 - √130)/18, we get:

x = 3λ ≈ 1.105
y = 3λ - 3 ≈ -0.316

So the point on the curve that is closest to P is approximately (1.105, -0.316).

To find the point that is furthest from P, we need to maximize the objective function f(x, y). Using the value of λ = (18 + √130)/18, we get:

x = 3λ ≈ 4.895
y = 3λ - 3 ≈ 5.316

So the point on the curve that is furthest from P is approximately (4.895, 5.316).

Learn more about point here:

brainly.com/question/30423121

#SPJ11

The volume of the cone is 57 cubic inches. To find the volume of the cone, we use the formula: V = (1/3)π[tex]r^{2}[/tex]h, where r is the radius of the cone, h is the height of the cone, and π is approximately 3.14.

Given that the radius of the cone is 3 inches and the height is 6 inches, we can substitute these values into the formula and solve for V: V = (1/3)π([tex]3^{2}[/tex])(6), V = (1/3)π(9)(6), V = (1/3)(3.14)(54), V = 56.52 cubic inches

Rounding to the nearest whole number, the volume of the cone is 57 cubic inches.

To know more about volume of cone, refer here:

https://brainly.com/question/29767724#

#SPJ11

After the discount and the tax, the amount that Roger pays is $45.41

We know that Roger purchased a pair of pants for 34.50 and a new a new for 12.00 he had a 10% discount on his total purchased and paid 8.5% sales tax, then the total cost before the discount and tax is:

C = 12.00 + 34.50 = 46.50

Now we apply the discount and the tax (as factors in a product) to get:

C' = 46.50*(1 - 0.1)*(1 + 0.085) = 45.41

That is the amouint that Roger pays for the two items.

Learn moer about taxes at.

https://brainly.com/question/1775528

#SPJ1

The equation that can be used to decode the secret code is m = c - 2

For you to decode the secret message, you need to turn the the encoding process around. Find the inverse.

Since the encoding process uses the equation c = m + 2, to decode the message, all that need to be found is the value of m. This can be done by rearranging the encoding equation to solve for m

move 2 to c side. it becomes m = c-2

The above answer is in response to the full question below;

Suppose M and C each represent the position number of a letter in the alphabet, but M represents the letters in the original message and C represents the letters in a secret code. The equation c=m+2 is used to encode a message.

Write an equation that can be used to decode the secret code into the original message.

Find more exercises on decoding;

https://brainly.com/question/29976739

#SPJ1

Given that 0 < p < 1 for X~B(5,p) and P(X=3) = P(X=4), so the value of p is 2/3.

We know that X~B(5,p) and P(X=3) = P(X=4).

Using the probability mass function of a binomial distribution, we can write:
P(X=3) = (5 choose 3) * p³ * (1-p)²
P(X=4) = (5 choose 4) * p⁴ * (1-p)¹

Since P(X=3) = P(X=4), we can set these two expressions equal to each other and simplify:
(5 choose 3) * p^3 * (1-p)² = (5 choose 4) * p⁴ * (1-p)¹
10p^3(1-p)^2 = 5p^4(1-p)

Dividing both sides by [tex]p^{3(1-p)[/tex] and simplifying, we get:
10(1-p) = 5p
10 - 10p = 5p
10 = 15p
p = 2/3

Therefore, the value of p is 2/3, given that 0 < p < 1.

To know more about probability mass function, refer to the link below:

https://brainly.com/question/30765833#

#SPJ11

Step-by-step explanation:

Looks as though it has been cropped.....picture is only a PART of the original...it has been 'cut off'  or 'cropped' on both sides .

The theoretical probability is: 12.5%. After 100 trials, the experimental probability is of: 20%. After 400 trials, the experimental probability is of: 11%. After more trials, the experimental probability is closer to the theoretical probability.

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.

The dice has eight sides, hence the theoretical probability of rolling a six is given as follows:

1/8 = 0.125 = 12.5%.

(eight sides, each of them is equally as likely).

The experimental probabilities are obtained considering the trials, hence:

The more trials, the closer the experimental probability should be to the theoretical probability.

More can be learned about probability at https://brainly.com/question/24756209

#SPJ1

The amount of levels left at the end is 105.

There is a total of 840 levels in the game.

On the first day she completes 1/6 of the total, so she completes:

840/6 = 140

The remaining is 840 - 140 = 700

Then she completes 1/4 of that, which is:

(1/4)*700 = 175

So now she has left 700 - 175 = 525

Then she completes 4/5, so she does:

(4/5)*525 = 420

The amount left is: 525 - 420 = 105

The correct option is B.

Learn more about fractions at:

https://brainly.com/question/11562149

#SPJ1

Answer is the probability that 144 furnace repair bills have a mean cost between 264 dollars and 266 dollars is approximately 0.2881 or 28.81%

The distribution of the sample mean of furnace repair bills will also be normally distributed with a mean of 264 dollars and a standard deviation of 30/sqrt(144) = 2.5 dollars (by the Central Limit Theorem).

We need to find the probability that the sample mean falls between 264 and 266 dollars:

z1 = (264 - 264) / 2.5 = 0

z2 = (266 - 264) / 2.5 = 0.8

Using a standard normal distribution table or calculator, we can find the area under the curve between z1 and z2:

P(0 ≤ Z ≤ 0.8) = 0.2881

Therefore, the probability that 144 furnace repair bills have a mean cost between 264 dollars and 266 dollars is approximately 0.2881 or 28.81%.

To know more about standard deviations:

https://brainly.com/question/475676

#SPJ11

The length should be less than or equal to 6 meters in order to have a plot with the maximum area allowed (45 square meters) when the width is 7.5 meters.

To find the length that will give a plot with the maximum area allowed, we can use the formula for the area of a rectangle:

Area = Length × Width

The width is given as 7.5 meters, and the area should not exceed 45 square meters.

Let's denote the length as L.

We want to maximize the area, so we need to find the value of L that satisfies the condition Area ≤ 45 and gives the largest possible area.

Substituting the given values into the area formula, we have:

Area = L × 7.5

Since the area should not exceed 45 square meters, we can write the inequality:

L × 7.5 ≤ 45

To find the maximum value of L, we can divide both sides of the inequality by 7.5:

L ≤ 45 / 7.5

Simplifying the right side:

L ≤ 6

Therefore, the length should be less than or equal to 6 meters in order to have a plot with the maximum area allowed (45 square meters) when the width is 7.5 meters.

To learn more on Area click:

https://brainly.com/question/20693059

#SPJ1

Answer:

[tex]x = \$2.06[/tex]

Step-by-step explanation:

Representing the price of one juice bottle as x, we can construct the equation:

[tex]15x + \$1.93 = \$32.83[/tex]

From here, we can solve for x.

↓ subtracting $1.93 from both sides

[tex]15x = \$32.83 - \$1.93[/tex]

[tex]15x = \$30.90[/tex]

↓ dividing both sides by 15

[tex]\boxed{x = \$2.06}[/tex]

Answer:

5.09

Step-by-step explanation:

You eliminate the decimal by multiplying both sides by 10:

10(.25x+0.5)=10(0.61+0.14x)

Then you get your new equation and combine like terms:

25x+5=61+14x

-14x           -14x

11x+5=61

11x+5=61

    -5  -5

11x=61

Then finally you do 61/11 which gets you around 5.09 if you round to 2 decimal places.

In both cases, the inequality holds true. The inequality is 415 + d ≥ 500.  

Part A:
To write an inequality that represents the situation, we can use the following format: money raised so far + additional money needed ≥ goal. In this case, the money raised so far is $415, and the goal is $500. Let d represent the additional money needed. So the inequality would be:

415 + d ≥ 500

Part B:

The inequality 415 + d ≥ 500 has infinitely many solutions, as there are countless values of d that can satisfy the inequality. This is because as long as the total amount raised is equal to or greater than $500, the student council meets its goal. For example, if d is 85, then the council would exactly meet its goal (415 + 85 = 500). If d is 100, the council would exceed its goal (415 + 100 = 515). In both cases, the inequality holds true.

More on inequalities: https://brainly.com/question/14192797

#SPJ11

Answer:

12

Step-by-step explanation:

-3(b - 5) + 7a - (9 - a) ^6                   a = 7 and b = -4

-3(-4 - 5) + 7(7) - (9 - 7)^6

= -3(-9) + 49 - (2)^6

= 27 + 49 - (64)

= 27 + 49 - 64

= 76 - 64

= 12      

The probability that the outcome is all heads if at least one coin shows a head is 8/49.

To solve these problems, we'll use the basic principles of probability.

The probability of an event K (at least one head) can be calculated by subtracting the probability of the complement of K (no heads) from 1.

Since the coins can either show all heads or not, the complement of K is the event of no heads, which is denoted as T (tails for all coins). Therefore, we have:

P(K) = 1 - P(T)

Each coin toss is independent, and the probability of getting tails on a single toss is 1/2. Since there are three coins tossed independently, we multiply the probabilities together:

P(T) = ([tex]\frac{1}{2}[/tex]) * ([tex]\frac{1}{2}[/tex]) * ([tex]\frac{1}{2}[/tex]) = [tex]\frac{1}{8}[/tex]

Substituting this into the equation for P(K):

P(K) = 1 - P(T) = 1 - [tex]\frac{1}{8}[/tex] = [tex]\frac{7}{8}[/tex]

So, the probability of event K (at least one head) is [tex]\frac{7}{8}[/tex].

The probability that the outcome is all heads if at least one coin shows a head can be calculated using conditional probability. We want to find P(H | K), which represents the probability of event H (all heads) given event K (at least one head).

The formula for conditional probability is:

P(H | K) = [tex]\frac{P(H \∩ K) }{ P(K)}[/tex]

To find P(H∩K), we need to determine the probability of the intersection of events H and K (i.e., the probability of getting all heads and at least one head).

Since H is a subset of K (if all coins show heads, then at least one head is shown), we have:

P(H∩K) = P(H)

Therefore, P(H∩K) is the same as P(H). According to the problem, P(H) = [tex]\frac{1}{7}[/tex].

Now, substituting P(H∩K) = P(H) and P(K) = [tex]\frac{7}{8}[/tex] into the conditional probability formula:

P(H | K) = [tex]\frac{P(H\∩K) }{ P(K)}[/tex] = ([tex]\frac{1}{7}[/tex]) / ([tex]\frac{7}{8}[/tex]) = ([tex]\frac{1}{7}[/tex]) * ([tex]\frac{8}{7}[/tex]) = [tex]\frac{8}{49}[/tex]

So, the probability that the outcome is all heads if at least one coin shows a head is [tex]\frac{8}{49}[/tex].

To summarize:

P(K) = [tex]\frac{7}{8}[/tex]

P(H | K) = [tex]\frac{8}{49}[/tex]

P(H∩K) = [tex]\frac{1}{7}[/tex]

Learn more about probability.

brainly.com/question/30034780

#SPJ11

The measure of in quadrilateral GERA ∠GAR = 102° , ∠TAR = 23°, ∠GAN = 55° , m AG = 110° , m RE = 110° , m GE = 94°

∠REG = 78° , m AR = 46

The sum of the opposite angle of the quadrilateral is equal to 180°

∠REG + ∠GAR = 180°

∠GAR = 180 - ∠REG

∠GAR = 180 - 78

∠GAR = 102°

The tangent chord angle is half the intercept arc

∠TAR = 1/2 m AR

∠TAR = 1/2 ×46

∠TAR = 23°

The sum of straight angles is 180

m ∠GAN = 180 - (m ∠TAR + m ∠GAR )

m ∠GAN =  180 - (23 + 120)

m ∠GAN = 55°

The tangent chord angle is half the intercept arc

m AG = 2 m ∠GAN

m AG = 2(55)

m AG = 110°

as EG = GA

m RE = m GA

m RE = 110°

Complete angle sum = 360°

m GE = 360 - (m AG + m AR + m RE)

m GE = 360 - (110 + 46 + 110 )

m GE = 94°

To know more about quadrilateral click here :

https://brainly.com/question/29934440

#SPJ4

Lizzie's divisibility test states that a number n is divisible by a certain number m if and only if the alternating sum of its two-digit chunks is divisible by m.

Lizzie's divisibility test involves breaking a positive integer into two-digit chunks, finding the alternating sum of these chunks, and then determining if the result is divisible by a certain number m.

To apply the test:

To prove that this is a divisibility test for m, you need to show that n is divisible by m if and only if the result of the alternating sum is divisible by m.

Learn more about alternating

brainly.com/question/19718027

#SPJ11

Answer :

Step-by-step explanation :

As We Know that Opposite sides of the Parallelogram are equal.

SO,

(i) YZ = XW (opposite sides)

=> 2b = b + 1

=> 2b - b = 1

=> b = 1

Since, YZ = 2b

=> YZ = 2 × 1

=> YZ = 2.

Also,

(ii) XY = WZ (opposite sides)

=> 3a - 4 = a + 2

=> 3a - a = 2 + 4

=> 2a = 6

=> a = 6/2

=> a = 3 .

Since, XY = 3a - 4

putting the value of a = 3.

=> 3(3) - 4

=> 9 - 4

=> 5

XY = 5.

Therefore, Option D is the required answer.

Answer:

Step-by-step explanation:

cos²x =3sin²x                     subtract both sides by 3sin²x

cos²x - 3sin²x = 0               use identity  cos²x+sin²x=1  => cos²x = 1-sin²x

                                           substitute in

(1-sin²x)-3sin²x = 0             combine like terms

1-4sin²x=0                           factor using difference of squares rule

(1-2sin x)(1+2sin x)=0          set each equal to 0

(1-2sin x)=0                                        (1+2sin x)=0

-2sinx = -1                                               2sinx= -1

sinx=1/2                                                    sinx =-1/2

Think of the unit circle.  When is sin x = ±1/2

at [tex]\pi /6, 5\pi /6, 7\pi /6, 11\pi /6[/tex]

This is from 0<x<2[tex]\pi[/tex]

The circumference of the circle with a diameter of 10m is 31.4m, using 3.14 as the value of pi and including the correct unit in the answer.

The formula for the circumference of a circle is C = πd, where C is the circumference and d is the diameter. Substituting the given value of the diameter, we get C = 3.14 x 10m = 31.4m as the circumference of the circle.

Since the value of pi is irrational, it cannot be expressed as a finite decimal or fraction, so we use an approximation, such as 3.14, to calculate the circumference. It is important to include the correct unit, which is meters in this case, in the answer to indicate the quantity being measured. Therefore, the circumference of the circle is 31.4m.

For more questions like Circumference click the link below:

https://brainly.com/question/28757341

#SPJ11

a. The area of Priya's scalp is ≈ [tex]615.75 cm^2[/tex]. b. Priya has approximately 92,363 strands of hair on her head.

a. The area of Priya's scalp can be estimated using the formula for the area of a circle, which is A = π[tex]r^2[/tex] ,where r is the radius (half the diameter) of the circle. Since Priya's diameter is 28cm, her radius would be 14cm. So, the area of her scalp would be:

A = π[tex](14cm)^2[/tex]
A ≈[tex]615.75 cm^2[/tex]

b. To estimate how many strands of hair Priya has on her head, we can multiply the number of hairs per square cm by the total area of her scalp. So, if Priya has approximately 150 hairs per square cm and her scalp has an estimated area of 615.75 cm^2, then:

Total number of hairs ≈ [tex]150 hairs/cm^2 * 615.75 cm^2[/tex]
Total number of hairs ≈ 92,362.5 hairs

Therefore, we can estimate that Priya has approximately 92,363 strands of hair on her head.

Know more about area here:

https://brainly.com/question/25292087

#SPJ11

The extremum of the function is a minimum at x = -2.5

The given function is k(x)(300+10x)(5-0.2x).

To check for symmetry about the y-axis, we replace x with -x in the given function and simplify as follows:

k(-x)(300-10x)(5+0.2x)

To check for symmetry about the x-axis, we replace y with -y in the given function and simplify as follows:

k(x)(300+10x)(5-0.2x) = -k(x)(-300-10x)(5+0.2x)

To find these points, we set the function equal to zero and solve for x:

k(x)(300+10x)(5-0.2x) = 0

This equation has three solutions:

x = 0

x = -30

x = 25.

The midpoint of the line segment connecting these points is

(x1+x2) ÷ 2 = (-30+25) ÷ 2 = -2.5.

To determine the type of extremum at this point, we need to check the sign of the second derivative. The second derivative of the function is:

k(x)(-1200+x)(0.2x+15)

Since the function is symmetric about the x-axis, the second derivative will be negative at the extremum if it is maximum and positive if it is a minimum.

When x = -2.5, the second derivative is positive, which means that the function has a minimum at x = -2.5.

To learn more about extremum follow the link:

https://brainly.com/question/31343270

#SPJ1