A used book store about $500 dollars worth of books they sold the books for $1,200 making $7.00 per book how many books were involved

Answers

Answer 1

Answer: cost of books = $500
selling price = $ 1200

Profit = $1200 - $500 = $700
profit from each book = $7
Number of books = total profit/ profit per book = $700/$7 = 100

So there were 100 books.

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Pulse rates of women are normally distributed with a mean of 77.5 beats per minute and a standard deviation of 11.6 beats per minute.a)What are the values of the mean and standard deviation after converting all pulse rates of women to z-scores using z=(x−μ)/σ?b)The original pulse rates are measured with units of "beats per minute." What are the units of the corresponding z-scores?
What is the first step in solving the following equation 3x - 5 = 20?
The measure of each interior angle of a _______ quadrilateral is _________than ________
Given 2 points on a graph, write the equation of the graph. Vertex (3,5). Point(5, -3)
Why do both ways of writing the numbers as ten and ones describe the same number?

What is the most likely explanation for Sarah maintaining a log of each time she spends or receives money?A. making a note each time she receives money so that she does not forget where it came from
B. making a note of each expense so that she does not repeat purchases
C. preparing a report for her bank on how she spends money
D. preparing a budget to review her expenses

Answers

Answer:

D is the right answer.

Step-by-step explanation:

Given that Sarah used to maintain a log of each time she spends or receives money.

Logs are maintained normally for money receipt and payment for the following reasons.

i) To know accurate the cash balance in hand at any time

ii) To estimate the purchases still due

iii) to plan for utilizing the available money for effective uses,

iv) to prepare a budget to review her expenses

Out of the four options the last option seems to be more appropriate for this.

The answer is D. preparing a budget to review her expenses.

A trailer is rented at $30 per day plus a charge per mile of use. The trailer traveled 25 miles in one day, and the total charge was $130. Which equation can be used to find the charge x, in dollars, per mile traveled?30x + 25 = 130

30x + 25x = 130

30 + 25x = 130

30 + 25 = 130x

Answers

30+25x=130 is the corresponding equation

The endpoints of are A(2, 2) and B(3, 8). is dilated by a scale factor of 3.5 with the origin as the center of dilation to give image . What are the slope (m) and length of ? Use the distance formula to help you decide: .

Answers

m=6,a'b'=3.5 square root 37

Answer:

The slope is m=6 and length of line is $d' =3.5√(37)$

Step-by-step explanation:

Given : The endpoints of line AB are A(2, 2) and B(3, 8). Line AB is dilated by a scale factor of 3.5 with the origin as the center of dilation to give image line A'B' .

To find : What are the slope (m) and length of line AB?

Solution :

The slope of a line does not change.

Slope formula is,

$m=(y_2-y_1)/(x_2-x_1)$

The slope of AB A(2, 2) and B(3, 8) is :

$m=(8-2)/(3-2)\n\nm=(6)/(1)\n\nm=6$

Distance formula, $d = √((x_2-x_1)^2 + (y_2-y_1)^2)$

The length of AB by distance formula,

$d = √((3 - 2)^2+(8-2)^2)\nd = √((1)^2+(6)^2)\nd=√(1+36)\nd=√(37)$

Line AB is dilated by a scale factor of 3.5.

The length of A'B' is :

$d' =3.5*√(37)\nd' =3.5√(37)$

Therefore, The slope is m=6 and length of line is $d' =3.5√(37)$

A restaurant requires 4 1/2 ounces of butter for every bowl of curry it makes. In an hour an average of 2 1/2 bowls of curry is served.How many ounces of butter are required in 1 1/2 hours?

ounces

Enter a number like 212or 52.

Answers

1 Ounce of Butter = B

Bowl of Curry = C

1 Hour = H

----------------

A restaurant requires 4 + 1/2 ounces of butter for every bowl of curry it makes...

C = 9/2 * B

In an hour, an average of 2 + 1/2 bowls of curry is served...

H = 5/2 * C

... Which means that: H = 5/2 * 9/2 * B

... So: H = 45/4 * B

The question was: How many ounces of butter are required in 1 + 1/2 hours?

Here is the answer:

3/2 * H = 3/2 * 45/4 * B

3/2 * H = 135/8 * B

In words, 16 + 7/8 ounces of butter would be required over a period of 1 + 1/2 hours.

Need help with R3, R4, S5