Question

Please help!! i’ve attempted 3 times already

Answer 1

`x=23`

Explanation:

In a circle, given a tangent line and a secant, the length of the tangent line squared is equal to the product of the two lines formed by the secant.

Therefore, we have the following equation:

`8^2=4(x-7),\\64=4(x-7),\\16=x-7.\\x=\boxed{23}`