Find the area of the triangle, given that it has a perimeter of 15 inches. round the answer to the nearest tenth. a. 10.8 square inches b. 12.5 square inches c. 21.7 square inches d. 97.4 square inches

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