Question

Find the value of x. If necessary, round your answer to the nearest tenth. The figures are not drawn to scale.

The figure consists of a tangent and a secant to the circle.

Answer 1

`x=9.4`

Explanation:

we know that

Applying the Intersecting Secant-Tangent Theorem

`(18+4)(4)=x^(2)`

`(22)(4)=x^(2)`

`88=x^(2)`

square root both sides

`x=9.4`