2 years ago

I'll give brainliest if you show your work. Plz answer quickly.

Mathematics

2 answers:

vlabodo [156]2 years ago

8 0

C) In step 3, he should have determined which square is closest to 18.

Maslowich2 years ago

5 0

Answer:

C) In step 3, he should have determined which square is closest to 18.

Step-by-step explanation:

17.64 also rounds to 18. 17.64 differs from 18 by ...

18 -17.64 = 0.36

whereas 18.49 differs from 18 by ...

18.49 -18 = 0.49

Hence 17.64 is closer to 18 and we might expect 4.2 to be closer to √18 than is 4.3.

___

The actual root of 18 is about 4.243, so 4.2 is a better approximation.

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