Answer:
x = 10
y = 11
Step-by-step explanation:
angle C is a right angle because AC = BC, so it is 90 degrees, meaning that 9x = 90. 90 divided by 9 is 10, so x = 10.
angle A = angle B, because AC = BC, so A and B are congruent. angle A measures 72 degrees, so angle B measures (8y-16) = 72.
(8y-16) = 72
+16 +16
8y = 88
divide by 8 on both sides
y = 11
