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Y_Kistochka [10]
3 years ago
7

What is the value of the expression 3 – a – b when a = 15 and b = –3?

Mathematics
2 answers:
Stolb23 [73]3 years ago
4 0
The answer is -9 c your welcome :)
Ann [662]3 years ago
3 0
The answer is -15. i am positive and hope it helped u

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leonid [27]

Answer:

Jeff read 5/28 of a book in 1 hour.

Step-by-step explanation:

The rate given is 5/7 of a book read in 4 hours.

If the questions asks how much he read in 1 hour, it means the answer needed is a unit rate.

A unit rate is a rate per unit. In this case, a rate per hour.

Let’s find how much Jeff read in 1 hour:

5/7 in 4 hours is the rate given so:

5/7 ÷ 4

= 5/7 x 1/4

= 5/28 (already simplified/final answer)

SO, Jeff read 5/28 of the book in 1 hour.

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