9514 1404 393
Answer:
49°
Step-by-step explanation:
Angles A and C are complementary, so we have ...
(3x -7) +(2x +17) = 90
5x = 80 . . . . . . . . . . . . . subtract 10
x = 16 . . . . . . . . . divide by 5
Then the measure of angle C is ...
∠C = 2x +17 = 2(16) +17
∠C = 49
