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PSYCHO15rus [73]
2 years ago
5

Nia solved the equation -1.98 = 5.2v + 13.1. Her answer was v = -2.9. She is fairly confident about her answer, but wants to do

a quick check of her solution using estimation to make sure her answer is reasonable.
Which of the following shows a good check of her answer?
Mathematics
1 answer:
valina [46]2 years ago
6 0

Answer:

substitute for v, when v = -2.9

Step-by-step explanation:

-1.98=5.2v+13.1

subtract 13.1 on both sides.

-15.08=5.2v

divide by 5.2 to isolate v

\frac{-15.08}{5.2} = \frac{5.2v}{5.2}

-2.9=v

substitute for v

-1.98=5.2(-2.9)+13.1

-1.98=-15.08+13.1

-1.98=-1.98

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