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Norma-Jean [14]
4 years ago
7

7c-2c=45 plz help I'm bad at math

Mathematics
2 answers:
polet [3.4K]4 years ago
4 0
Combine like terms.

5c = 45

Divide 5 on both sides.

c = 9

Hope this helps!
Serga [27]4 years ago
4 0
7c-2c=45
7-2=5
5c=45
5c÷5=c
45÷5=9
C=9
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Answer:

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Step-by-step explanation:

First, let's find out how many words Maria has left to write. If she has already finished 2/5 of her essay, she has 3/5ths left to write. We can do 3/5 times 1000 to find out how many words are left.

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Now to find the amount of time, we can find how take to write 600 words at a pace of 6 words per minute by dividing 600 by 6.

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\frac{((1-(\frac{2}{5})*1000) }{6} is also a valid solution.

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