Answer:
x =7
Step-by-step explanation:
Secant-Secant Formula:
(whole secant) x (external part) = (whole secant) x (external part)
4 *(4+x) = 2 * (2+20)
Distribute
16+4x =2*22
16+4x = 44
Subtract 16 from each side
16+4x-16 = 44-16
4x=28
Divide each side by 4
4x/4 =28/4
x=7
