Question

Solve for x. See the image below.

Answer 1

x=10

Explanation:

Secant-Secant Formula:

(whole secant) x (external part) = (whole secant) x (external part)

(7+9) * 9 = ( x+8) *8

16*9 = ( x+8)*8

Divide each side by 8

16*9/8 = x+8

18 = x+8

Subtract 8 from each side

18-8 = x

10 =x