All categories

3 years ago

Sara had $165 dollars to spend on 9 books. after buying them she had 12 dollars. How much did each book cost?

Mathematics

1 answer:

IRISSAK [1]3 years ago

3 0

I think is 18.33 or I don't know

You might be interested in

Which set of points represents equivalent ratios and would follow the same pattern on a graph?

Paladinen [302]

(2,4), (4,8), (3,6), (5,10) because they’re all ratios of 1:2

8 0

3 years ago

Which of the following changes is a chemical change?<br> A ice me

Talja [164]

Answer:

Step-by-step explanation:

The question got caught off. Can't read any of the other examples. I can tell you though that ice melting is a physical change, not a chemical change.

5 0

3 years ago

20 points! Will mark the brainliest!

andrew-mc [135]

$\dfrac{ \dfrac{x+3}{4x^2-16} }{ \dfrac{2x^2+10x+12}{2x-4} }$

-----------------------------------------------------------------------------------
Write the divide fraction horizontally:
-----------------------------------------------------------------------------------

$= \dfrac{x+3}{4x^2-16} \div \dfrac{2x^2+10x+12}{2x-4}$

-----------------------------------------------------------------------------------
Factorise the numerators and denominators when possible:
-----------------------------------------------------------------------------------

$= \dfrac{x+3}{4(x+2)(x-2)} \div \dfrac{ 2(x + 3) (x + 2)}{2(x-2)}$

-----------------------------------------------------------------------------------
Convert the divide fraction to multiplication fraction
-----------------------------------------------------------------------------------

$= \dfrac{x+3}{4(x+2)(x-2)} \times \dfrac{2(x-2)}{2(x+3)(x+2)}$

-----------------------------------------------------------------------------------
Cancel the factors
-----------------------------------------------------------------------------------
$= \dfrac{1}{4(x+2)} \times \dfrac{1}{(x+2)}$

-----------------------------------------------------------------------------------
Combine to single fraction
-----------------------------------------------------------------------------------

$= \dfrac{1}{4(x+2)^2}$

4 0

3 years ago

I need help plzzzzzzzzzzzzzzzzzzzzz

blagie [28]

Answer:

Step-by-step explanation:

Start box

180 = 89+42+x

180-89-42=x

49 = x

2nd box

180 = 84+58+x

180-84-58=x

38 = x

3rd box

180=74+2x

180-74=2x

106/2 = x

53 = x

4th box

180=102+2x

180-102=2x

78/2 = x

39 = x

4th box

180 = 73+81 +x

180-73-81=x

26 = x

5th box

180=2*54+x

180 - 2*54 = x

72 = x

6th box

180=62-2x

180-62=2x

118=2x

118/2=x

59 = x

7th box

180 = 2*68 + x

180-2*68=x

44 = x

3 0

2 years ago

Abigail has $356 in her bank account. She earns simple interest on her money at a rate of 3% per year for a total of five years.

ch4aika [34]

Answer:

A. 409.4

Step-by-step explanation:

3%=10.68

10.68*5=53.4

53.4+356=409.4

3 0

3 years ago