Question

find value of x. in the figure

Answer 1

4x+3x+20m =90
5x+20m = 90
5x = 90-20
5x = 70
x = 70/5
x = 14

Answer 2

hypotenuse ²= side²+side²

(20)² = (4x)²+ (3x)²

400 = 16x² + 9x²

400 = 25x²

x² = 400/25

x² = √16 (squaring on both sides)

x = 4

Hope it helps...