Which is the best approximation of 80?

A. 10
B. 8.9
C. 6.6
D. 6

Normally, you would just use a calculator and enter √80. But if you don't want to use a calculator, remember that the square root is the number that goes into something when multiplied by itself. For example, √9 is 3, because 3*3=9. So, 80 is very close to 81. √81=9. Therefore, the answer to √80 will be slightly smaller than and extremely close to 9. Therefore, the answer is B) 8.9

Step-by-step explanation:

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: