Convert 15 kilometers per hour to meters per second. 4.2 meters per second
54 meters per second
25 meters per second
9 meters per second

the answer is 31.27mph

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