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Vitek1552 [10]
3 years ago
6

Jessica had 140 to spend on 8 books. After buying them she had 12 dollars. How much did each book cost?

Mathematics
1 answer:
Rashid [163]3 years ago
8 0

Answer:

each book was $16

Step-by-step explanation:

140-12=128 divided by 8 = 16

hope this helps!

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3/4 times 7 i need help plz
nalin [4]

Answer:

5.25 or 21/4 or 5 1/4

Step-by-step explanation:

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5 0
3 years ago
8. Noah rides his motorcycle 90 miles in 2 hours 30 minutes. What is his average speed in
Nookie1986 [14]

Hey there! I'm happy to help!

We see that Noah rides his motorcycle 90 miles is 2 hours and 30 minutes, which is 150 minutes. We want to find his mph. To find this his mph, we want to find how far he has gone in one hour.

How much bigger is 150 than 60?

150/60=2.5

150 is 2.5 times bigger than 60. This means that we need to divide 90 by 2.5 to figure out how far Noah rode in 1 hour.

90/2.5=36

Therefore, Noah's average speed is 36 mph.

Have a wonderful day! :D

6 0
3 years ago
Simplify 16x² - 9y²/(4x-3y)^2​
const2013 [10]

9514 1404 393

Answer:

  (4x +3y)/(4x -3y)

Step-by-step explanation:

  \dfrac{16x^2-9y^2}{(4x -3y)^2}=\dfrac{(4x)^2-(3y)^2}{(4x-3y)^2}=\dfrac{(4x-3y)(4x+3y)}{(4x-3y)(4x-3y)}\\\\=\boxed{\dfrac{4x+3y}{4x-3y}}

4 0
3 years ago
WILL MARK BRAINLIEST
oksano4ka [1.4K]

Answer:

30

Step-by-step explanation:

60(highest) - 30(lowest) = 30(range)

3 0
3 years ago
What is 42 divided by 1020
Dvinal [7]
It is 0.0411764706 when divided with a calculator. In a scientific notation it would be 4.11764706 x 10^(-2).
6 0
3 years ago
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