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Pie
3 years ago
15

Mike had two hundred fifty- eight dollars to spend on nine books. After buying them he had fifteen dollars. How much did each bo

ok cost?​
Mathematics
1 answer:
vaieri [72.5K]3 years ago
4 0

Answer:

$27 per book

Step-by-step explanation:

258 - 9(books) = 15

258-15 = 243

243 / 9=27

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Jeff gave 1/4 of a sum of money to his wife. Then he divided the remainder equally among his 4 children.
Semenov [28]

Answer:

A) The fraction of sum of money did each child receive is \frac{3 x}{16}

B) The sum of money did Jeff have $ 3200

Step-by-step explanation:

Given as :

Let The sum of money did Jeff have = $ x

The fraction of money did Jeff's wife get = \frac{1}{4} of $ x

The remaining money Jeff will have = $ x - \frac{1}{4} of $ x

I.e The remaining money Jeff will have = \frac{4 x - x}{4}

                                                                = \frac{3 x}{4}

A ) The remaining amount of money is divided equally among 4 children

So, The fraction of sum of money did each child receive = \frac{\frac{3 x}{4}}{4}

I.e The fraction of sum of money did each child receive =  \frac{3 x}{16}

B ) If each child will receive $ 600

∴,  \frac{3 x}{16} = $ 600

Or, 3 x = $ 600 × 16

Or, 3 x = $ 9600

∴    x = \frac{9600}{3}

I.e  x = $ 3200

So, The sum of money did Jeff have $ 3200  

Hence ,

A) The fraction of sum of money did each child receive is \frac{3 x}{16}

B) The sum of money did Jeff have $ 3200   Answer

8 0
3 years ago
Simplify 3(r + 4) - 5r
Nimfa-mama [501]

Answer: 12-2r

Step-by-step explanation:

3r+12-5r

= -2r+12 or 12-2r

6 0
3 years ago
Read 2 more answers
What is the distance between the points (4, -2) and (-1, 10)?
Tju [1.3M]

Answer:

13 units.

Step-by-step explanation:

We can find distance between points by using the following formula:

\sqrt{(change in x)^2+(changeiny)^2}

The change in x is -5, and change in y is 12. Let's apply this to the formula.

\sqrt{(-5)^2+(12)^2}. Evaluate this, and we get 13.

Hope this helped!

5 0
3 years ago
Name the polynomial -2x^4-x^3*8x^2-12 by degree
Murrr4er [49]

Answer:

see below

Step-by-step explanation:

-2x^4-x^3+8x^2-12

First list by highest power to lowest power

The highest power is x^4 so this is a 4th degree polynomial or a quartic polynomial

If you really mean the multiply sign

-2x^4-x^3*8x^2-12

-2x^4 - 8x^5 -12

-8x^5 -2x^4 -12

This would be a 5th degree or quintic

8 0
3 years ago
Which angles are complementary? I'm not sure if its B.
Angelina_Jolie [31]

Answer:

You are right, it's B

Step-by-step explanation:

Complementary angles are angles that add up to 90 degrees.

4 0
3 years ago
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