Question

A. 21
b. 42
c .24
d. 18
e. 38

Answer 1

a. 21

Explanation:

Angle TYZ is half the measure of arc YZ, so we have ...

2(3x -17) +(12x +16) = 360

18x - 18 = 360 . . . . collect terms

x - 1 = 20 . . . . . . . . .divide by 18

x = 21