Question

Which expression helps you find the length of X of a side of a rectangle that has a diagonal of 15 units and a width of nine units

Answer 1

12 units

Explanation:

by the pythagorean relation,

x^2 + 9^2 = 15^2

x^2 + 81 = 225

x^2 = 144

x = 12 units

Answer 2

x^2 = 15^2 – 9^2

Explanation: