Question

I want to know if I got number 29 correct

Answer 1

It is required to find√15

The number 15 is between 9 and 16

So, Beau found 3^2 = 9 and 4^2 = 16

So, √15 will between 3 and 4

He thinks a good estimate for √15 = (3+4)/2 = 3.5

Beau's estimate is low correct because 15 is near to 16 more than 9

So, 3.8 or 3.9 would be a good answer for √15 because 3.5 is too low.