Answer:
B
Explanation:
given two chords intersecting in a circle , then
the product of the measures of the parts of one chord is equal to the product of the measures of the parts of the other chord, that is
TH × HN = MH × HY ( substitute values )
8(x + 20) = 12 × 20 = 240 ( divide both sides by 8 )
x + 20 = 30 ( subtract 20 from both sides )
x = 10