Ask question

Ask question

All categories

2 years ago

14

If Jan can buy 12 copies of a certain book $40, what is the unit rate for cost per copy? How much would it cost her to buy 18 co

pies at the same rate?

2 answers:

goldfiish [28.3K]2 years ago

7 0

40/12=3.33
3.33x18= 59.94

crimeas [40]2 years ago

3 0

3.33 since we know 12 is for 40 we can set up an equation

You might be interested in

Solve the question 12 = 24x + 12.

Kisachek [45]

Answer:

The answer is 0.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The sales price of last year's hottest game is 30% off the retail price. The game sold last year for$86.00. What is the sales pr

Olin [163]

I was doing it wrong. You have to find 30% of $86 which is $25.80, i think, and then take it away from $86 and so the sales price is $86 - $25.80 = $60.20. Originally I only did the first bit, I forgot you have to take it away. sorry hope this helps more now.

4 0

3 years ago

Read 2 more answers

A slice is made perpendicular to the base of a right rectangular prism as shown. What is the area of the resulting two-dimension

Yuki888 [10]

Answer:

225 i think

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Solve everything for brainiest

IRISSAK [1]

Answer:

1. $a = 8$

2. $b = \frac{1}{8}$

3. $c = 2 \frac{3}{5}$

4. $d = \frac{13}{50}$

Step-by-step explanation:

6 0

3 years ago

2x^2+5x+3/x^2-3x-4 divided by 4x^2+2x-6/x^2-8x+16

Masja [62]

Answer: $\frac{x-4}{2x-2}$

Step-by-step explanation:

$\frac{2x^2+5x+3}{x^2-3x-4}$ divided by $\frac{4x^2+2x-6}{x^2-8x+16}$ is the same thing as multiplying $\frac{2x^2+5x+3}{x^2-3x-4}$ by $\frac{x^2-8x+16}{4x^2+2x-6}$ .

The equation we get is:

$\frac{2x^2+5x+3}{x^2-3x-4}*\frac{x^2-8x+16}{4x^2+2x-6}$

With this equation, we can factor each equation:

$\frac{(x+1)(2x+3)}{(x+1)(x-4)} *\frac{(x-4)(x-4)}{2(x-1)(2x+3)}$

We can cancel out like terms since they would be dividing each other:

$\frac{x-4}{2x-2}$

8 0

3 years ago