Question

Angle measures and segment lengths someone please explain!!!

Answer 1

4.9

Explanation:

got it right

Answer 2

Intersecting chords theorem:

`7\cdot7=10x`

i.e. when two chords intersect, the products of the resulting line segments' lengths are equal. Then

`10x=49\implies x=(49)/(10)=\boxed{4.9}`