What is XY?
Since the arc of 8x - 5 and 6x + 10 are the same, they should be the same too.
8x - 5 = 6x + 10
2x = 15
x = 7.5
10x - 10 = XY
10(7.5) - 10 = XY
65 = XY
=^._.^=