MATHEMATICS HIGH SCHOOL

99 is how many times 9?

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

99 ÷ 9 = 11

99 is 11 times 9

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How do frogs close their eyelids

Answers

by moving the muscle int he eyelids

An equation was created for the line of best fit from the actual enrollment data. It was used to predict the dance studio enrollment values shown in the table below:Enrollment Month
January February March April May June
Acutal 120 140 150 140 150 130
Predicted 80 150 110 150 110 150
Residual 40 −10 40 −10 40 −20

Analyze the data. Determine whether the equation that produced the predicted values represents a good line of best fit.
No, the equation is not a good fit because the residuals are all far from zero.
No, the equation is not a good fit because the sum of the residuals is a large number.
Yes, the equation is a good fit because the residuals are not all far from zero.
Yes, the equation is a good fit because the sum of the residuals is a small number.

Answers

The right answer for the question that is being asked and shown above is that: "No, the equation is not a good fit because the sum of the residuals is a large number." Determine whether the equation that produced the predicted values represents a good line of best fit.

The equation that produced these predicted values is not a good fit given that the sum of the residuals is a large number.

What is the sum of the residuals in a regression equation?

The sum of the residuals in a regression is a value that is always supposed to be almost equal to zero in a regression analysis.

The residual tells us that the error term has been reduced to the minimum in the regression analysis.

Read more on a regression analysis here:

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Devon owns a house cleaning company and has to give price quotes to potential customers. He figures out his price by assuming a $25 base charge and then adding $8 for each bathroom and $4 for each other room. If he uses P to represent the price and B for bathroom and R for other rooms, which of these represents his price quote formula?A P = 25 + 12(BR)
B P = 4R + 8B + 25
C P = 25(4R + 8B)
D P = (4)(8)(R + B) + 25

Answers

The price quote formula for this problem is P = 4R + 8B + 25.

Hence option B is correct.

Use the concept of forming of equation defined as:

A mathematical definition of an equation is a claim that two expressions are equal when they are joined by the equals sign ("=").

Given that,

Devon owns a house cleaning company.

He calculates his price quotes for potential customers using a specific formula.

The formula includes a $25 base charge.

He adds $8 for each bathroom (B).

He adds $4 for each other room (R).

The objective is to determine which formula represents Devon's price quote calculation.

If R represent the number of rooms

Then cost of R room = 4R

If B represents the number of bathrooms

Then cost for B bathroom = 8B

The base charge is 25

Then the total charge is = 4R + 8B + 25

Hence,

The price quote formula for this problem is P = 4R + 8B + 25 which is option B.

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the answer is P=25(4R+8B)

How do i identify the slope,y intercept,x intercept, and zero on a graph

Answers

To find the slope of a line, you need to find the change in x over the change in y, or rise over run. You can do this by taking two points and using the formula $(y_(2) -y_(1))/(x_(2) -x_(1))$ .

To find the y-intercept, find where the graph touches the y-axis.

To find the x-intercept, find where the graph touches the x-axis.

Zeroes on a graph are the same as its x-intercepts.

Mario bought $5 worth of stamps at the post office. He bought ten more 6-cent stamps than 10-cent stamps. The number of 8-cent stamps was three times the number of 10-cent stamps. He also bought two 20-cent stamps. How many of each kind of stamp did he purchase?

Answers

He bought 2 20-cent stamps.
That is $0.40.
He spent $4.60 on the other stamps.

He bought x 6-cent stamps, y 10-cent stamps, and z 8-cent stamps.

y + 10 = x
z = 3y

6x + 10y + 8z = 460

6(y + 10) + 10y + 8(3y) = 460

6y + 60 + 10y + 24y = 460

40y + 60 = 460

40y = 400

y = 10

x = y + 10 = 10 + 10 = 20

z = 3y = 3(10) = 30

He bought
20 6-cent stamps
10 10-cent stamps
30 8-cent stamps
2 20-cent stamps

Hi,Can some one tell me how to solve this problem √-27 (step by step please)