please help me I'm not smart !!

A function, C(x), to model the water used by the car wash on a shorter day will be (B) 3x³ + 4x² - 11x - 8.

To find a function, C(x), to model the water used by the car wash on a shorter day:

Given information -

Now the amount of water is cut from the total water usage so to find out the new model c(x) we need to subtract the decrease in water from the total water usage.

We are trying to find:

Therefore, a function, C(x), to model the water used by the car wash on a shorter day will be (B) 3x³ + 4x² - 11x - 8.

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The correct question is given below:

The water usage at a car wash is modeled by the equation W(x) = 4x3 + 6x2 − 11x + 7, where W is the amount of water in cubic feet and x is the number of hours the car wash is open. The owners of the car wash want to cut back their water usage during a drought and decide to close the car wash early two days a week. The amount of decrease in water used is modeled by D(x) = x3 + 2x2 + 15, where D is the amount of water in cubic feet and x is time in hours.

Write a function, C(x), to model the water used by the car wash on a shorter day

Answer:

4%

Step-by-step explanation:

Answer:

bro you can find 3rd side by using pythogras thegrom

Step-by-step explanation:

The number of hours parked for the cost of each garage to be the same is 3 hours.

An equation is an expression that shows the relationship between two or more numbers and variables.

Let t represent the number of hours parked at either garage A or garage B. Hence:

Total charges at garage A (A) = 5t + 11

A = 5t + 11

Total charges at garage B (B) = 6t + 8

B = 6t + 8

If both garages have the same cost:

5t + 11 = 6t + 8

t = 3

The number of hours parked for the cost of each garage to be the same is 3 hours.

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since the population standard deviations (σ1 and σ2) are not provided, we cannot calculate the exact test statistic Z.

To test the null hypothesis H0: (μ1 - μ2) = 0 versus the alternative hypothesis Ha: (μ1 - μ2) ≠ 0, we can use a two-sample z-test. The test statistic is calculated as:

Z = (x bar1 - x bar2) / sqrt((σ1^2 / n1) + (σ2^2 / n2))

Where:
X bar1 and x bar2 are the sample means of the two groups,
σ1 and σ2 are the population standard deviations of the two groups,
n1 and n2 are the sample sizes of the two groups.

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9514 1404 393

Answer:

  3x +2y +24 = 0

Step-by-step explanation:

In general, the equation of a perpendicular line can be found by swapping the coefficients of x and y, then negating one of them. The value of the constant will be what is required to make the line pass through the given point.

The equation will be of the form ...

  3x +2y +c = 0

At the given point, (x, y) = (-6, -3), we have ...

  3(-6) +2(-3) +c = 0 . . . . substitute the given point coordinates

  -18 -6 +c = 0 . . .simplify

  c = 24 . . . . . . . . add 24

The general-form equation for the line is ...

  3x +2y +24 = 0 . . . . . shown in blue in the attachment

Answer:

\(y=\frac{5}{9}\)

Step-by-step explanation:

For the graph of \(y=f(x)\),

the horizontal asymptote becomes \(y=\frac{5}{9}\)

The number of driving lessons you need to take with a professional instructor before your parents can teach you varies depending on the regulations in your area. In some regions, a specific number of driving lessons is required by law before you can apply for your driver's license. As a result, you should check with your local Department of Motor Vehicles (DMV) or other regulatory agency to learn more about the specific requirements in your area.

In general, however, it is usually beneficial to take as many driving lessons as possible with a professional instructor. Professional driving instructors have been educated in how to teach driving skills safely and effectively. They have also assisted many other people in learning how to drive, and as a result, they have a wealth of knowledge and expertise to draw on.

The more driving lessons you take with a professional instructor, the more chances you'll have to learn and improve your driving abilities. You may be able to practice with your parents after only a few lessons, but it's generally a good idea to take as many as possible with an instructor before doing so. This will give you the best chance of success while you learn to drive safely and confidently.

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Answer:

(x-6)

Step-by-step explanation:

x² - 36 = (x+6)(x-6)

remeber that a negative and a positive = negative

and in this case 36 is negatice to verify your answer multiply brackets .

Answer:

b is correct

Step-by-step explanation:

Answer:

-22

Step-by-step explanation:

5(4+6)-72

5(10)-72

50-72

-22

Answer:

5(4+6)-72
5x10-72
50-72
-22

Step-by-step explanation:

If you use PEMDAS, the P is for parenthesis.
So first, you do the (4+6) and then multiply it by 5, when you get that answer, do the final step. Subtract 72.

Hope this helped!! <3

To determine the number of high fives that will be exchanged, we need to find the total number of unique pairs of students in Ronnie's class Since there are 20 people in the class, each person .

To calculate the number of unique pairs, we can use the formula for combinations, which is nC2, where n is the number of people .So, for Ronnie's class with 20 people, the number of high fives exchanged is:20C2 = (20 * 19) / (2 * 1) = 190.Therefore, a total of 190 high fives will be exchanged in Ronnie's class on National High Five Day. we need to find the total number of unique pairs of students in Ronnie's class Since there are 20 people in the class, each person needs to give a high five to every other person, excluding themselves.

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Answer:

Step-by-step explanation:

20 oz walnuts = 20/25 = 0.8 ounces of walnuts per bag. / bag

11.2 oz of almonds = 11.2 / 25 = 0.448 ounces of almonds / bag

28.3 oz of cashews = 28.3 / 25 = 1.132 oz of cashews / bag

Answer:

500

Step-by-step explanation:

Hello!

Let the smallest number be x. The next number would be x + 1, then the next would be x + 2, then x + 3.

The sum of these four is 1998.

Solve for x:

The third number is (x + 2), so simply add 2 to 498 = 500

The third number is 500.

All 4 numbers are 498, 499, 500, and 501.

Answer: 140

Step-by-step explanation: 25x20=500

32x20=640

640-500= 140!!

The positive root of the equation \(4cos(x) - x^4\) using Newton's method is 0.866966.

We begin with an initial guess \(x_{0}=1\), and we can iteratively define the calculation using the formula:

\(x_{i+1}= x_{i} - \frac{ f(x_{i})}{f'(x_{i})}\)

where \(f(x)=4cos(x) - x^4\)and f'(x) is the derivative of f(x).

So, \(f'(x) = -4sin(x) - 4x^3.\)

We repeat this process, using the previous approximation to find the next one, until we reach the desired accuracy.

In each iteration, we substitute the current approximation into the formula to refine our estimate.

Iteration 1: \(x_{1}= x_{0}- f(x_{0})/f'(x_{0})= 1 - \frac{ (4cos(1) - 1^4)}{(-4sin(1) - 4(1)^3)}= 1.576\)

Iteration 2: \(x_{2}= x_{1} - f(x_{1})/f'(x_{1}) = 1.1576 - \frac{(4cos(1.1576) - 1.1576^4)}{(-4sin(1.1576) - 4(1.1576)^3)} = 1.2055\)

Iteration 3: \(x_{3}= x_{2} - f(x_{2})/f'(x_{2}) = 1.2055 - \frac{4cos(1.2055-(1.2055)^4)) }{(-4sin(1.2055) - 4(1.2055)^3)} = 1.2080\)

After several iterations, we get that the positive root of the equation \(4cos(x) - x^4\) is approximate x ≈ 0.866966, accurate to six decimal places.

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Answer: 22( w + 2 ) =77 and the amount of the water bottle would be 1.50

Step-by-step explanation: i dont know what to write??

Answer:

8

Step-by-step explanation:

Answer:

8mph

Step-by-step explanation:

Because it took Ruthene 1/4 of an hour or 15 minutes to run two miles, if she were to run for an entire hour she would go 4 times as far, or 8 miles. This means that Ruthene had an average speed of 8mph.

So there are 6 permutations possible with the letters "ABC". These are: ABC, ACB, BAC, BCA, CAB, CBA.

Permutations are a way of arranging objects in a specific order. The number of permutations of a set of n distinct objects is given by n!, where n! denotes the factorial of n.

In the case of the letters "ABC", there are three distinct objects: A, B, and C. Therefore, the number of permutations possible with these letters is:

3! = 3 x 2 x 1 = 6

This means that there are 6 possible ways of arranging the letters "ABC" in a specific order. These permutations are:

ABC

ACB

BAC

BCA

CAB

CBA

To see why there are 6 possible permutations, consider the first position. There are three letters to choose from, so there are three possible choices for the first position. Once the first letter is chosen, there are two letters left to choose from for the second position. Finally, there is only one letter left to choose from for the third position. Therefore, the total number of permutations is:

3 x 2 x 1 = 6

In summary, the number of permutations of a set of n distinct objects is given by n!, and in the case of the letters "ABC", there are 3! = 6 possible permutations: ABC, ACB, BAC, BCA, CAB, and CBA.

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9.43 inches is the measure of the longest segment

We are aware that the diagonal connecting the two opposing corners at the top and bottom will be the longest segment.

We know how to find the diagonal of a right triangular prism using the following formula:

d = \(\sqrt{w^2 + l^2+h^2} \\\\\)

where w = width = 1.4

l = length = 4.8

h = height = 8

We would put these values in the formula above

\(d = \sqrt{1.4^2 + 4.8^2+8^2} \\\\\)

d = \(\sqrt{1.96+23.04+64}\)

d = 9.43

The measure of the longest line segment is given as 9.43 inches

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The probability is 0.6480.

The probability is 0.9629.

1. This can be computed using the standard normal distribution as follows:

z = (70 - 69.0) / 2.8 = 0.357

Using a standard normal table or calculator, we find that P(Z ≤ 0.357) ≈ 0.6480. Therefore, the probability that a male passenger can fit through the doorway without bending is approximately 0.6480.

2. = 2.8/√25 = 0.56 inches.

We want to find P(x < 70), which is the probability that the mean height of the 25 men is less than 70 inches. This can be standardized using the standard normal distribution as follows:

z = (70 - 69.0) / 0.56 = 1.79

Using a standard normal table or calculator, we find that P(Z < 1.79) ≈ 0.9629. Therefore, the probability that the mean height of the 25 men is less than 70 inches is approximately 0.9629.

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Answer:

0.491

Step-by-step explanation:

Answer:

<A = 133degrees

Step-by-step explanation:

Find the diagram attached

Using the theorem that "the sum of opposite angle of a cyclic quadilateral is 180 degrees, hence;

m<A + m<C = 180

4x+5 + x + 15 = 180

4x+x+5+15 = 180

5x+20 = 180

5x = 180 - 20

5x = 160

x = 160/5

x = 32degrees

Get the measure of angle A

<A = 4x+5

<A  = 4(32)+5

<A = 128+5

<A = 133degrees

Answer:

Step-by-step explanation:

all of them could be made into a difference of squares since they all have a minus sign in the expression, but maybe the question is if they can easily be made into a difference of squares.

with that said

\(y^{4}\) -2 =>  \((y^{2}) ^{2}\)- \((\sqrt{2}) ^{2}\)  could be a difference of squares but not easy

25\(m^{2}\)\(n^{4}\) - 1 => (5m\(n^{2}\))^2 - \(1^{2}\)   yes  and pretty easy

\(p^{8}\) - \(q^{4}\) => \((p^{\sqrt{8} } )^2\)-\((q^{2})^2\)  could be but not easy

16\(x^{2}\) - 24 => \((4x)^{2}\) -\((\sqrt{24}) ^{2}\)  could be but not easy

To find the equation of the line passing through the point (6, -3) with a slope of -2, we can use the point-slope form of the equation of a line:y - y1 = m(x - x1)where (x1, y1) is the given point and m is the slope.Substituting the given values, we get:y - (-3) = -2(x - 6)Simplifying, we get:y + 3 = -2x + 12Subtracting 3 from both sides, we get:y = -2x + 9So, the equation of the line is y = -2x + 9

Answer:

youngest=115

middle=150

elder=230

Step-by-step explanation:

let the youngest be x

the middle will be x+35

the oldest will be 2x

x+x+35+2x=495

4x+35=495

4x=495-35

4x=460

x=115

since the youngest is x,the money he will receive is $115.

the middle will be x+35 which is equal to 115+35=$150.

lastly the oldest will be 2x which is equal to 2×115=$230.

Answer:

Defined variables:

Y - amount the youngest son gets

M - amount the middle son gets

O - amount the oldest son gets

Y got $115

M got $150

O got $230

Step by Step explaination:

If Y is the youngest, then the middle son, M = Y + $35 since the middle child gets $35 more than the youngest gets. The oldest son, O = 2Y since it’s twice the amount the youngest gets.

If you add each of those up, the equation you get is 2Y + (Y+$35) + Y = $495. Now you can solve for Y, the youngest son.

2Y + (Y+$35) + Y = $495

4Y + $35 = $495

4Y = $460

Y = $115

If Y gets $115 and M gets $35 more, M gets $150.

If Y gets $115 and O gets twice that amount, O gets $230.

To double check my work add 230 + 115 + 150. This equals $495. Hope this helps!