Question

Runners at a cross-country meet run 2 miles south and then 4 miles west from the starting line. determine the shortest straight path they must run to get back to the starting line.

a. 6 miles square
b. root of 6 miles
c. square root of 12 miles
d. square root of 20 miles

Answer 1

square root of 20

Explanation:

I did the pre-algebra exam

Answer 2

d. square root of 20 miles

Explanation:

It formed a triangle, 2 miles for one length, and 4 miles for the another one. You use pythagorean theorem to solve it by:

√(2^2 + 4^2)

= √(4 + 16)

= √20