Question

If SQUARE ROOT OF x 2 + y 2=25, and y=2x, find x.

Answer 1

Answer:

x=11.18

Explanation:

given y=2x

(x^2+y^2)^1/2=25

squaring both sides

x^2+y^2=625

x^2+4x^2=625

5x^2=625

x^2=625/5=125

x=11.18