Question

I don’t really understand what to do. So if anyone could help I’d be amazing.

Answer 1

Answer:

x = 1

Step-by-step explanation:

Oh, this is one of those incredibly cool circle theorems!  You might like this page:

https://www.mathopenref.com/secantsintersecting.html

For two secants that intersect at a point outside the circle, the product

(segment outside the circle)(whole secant) is the same for both secants!

What's the length of the entire secant that has x's on it?  6x + 8x = 14x.

What's the length of the entire secant that has 9 and 7 on it?  9 + 7 = 16

$8x(14x) = (7)(16) \\ 112x^2 = 112 \\ x^2=1 \\ x=1$