Evaluate x to the second power -1 when x =-8

1) -7
2) 3
3) 63
4) 15

lol.

it's ok we all do this sometimes.

-aparri

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c