Question

I have to solve for x and i dont know how to

Answer 1

From the question,

`5x=7x-18`

This is because of the two tangent theorem, which states that if we draw two lines from the same point which lies outside a circle, such that both lines are tangent to the circle, then their lengths are the same.

Therefore,

`\begin{gathered} 5x-7x=-18 \\ -2x=-18 \\ x=(-18)/(-2) \\ x=9 \end{gathered}`

The value of x is 9