Answer:
C. 17,820
Step-by-step explanation:
30,500-12,680= 17,820
I'm sure it's B
hope this helps :)
X = 4(180 - x)
x = 720 - 4x
4x + x = 720
5x = 720
x = 720/5
x = 144
180 - x =
180 - 144 =
36
the measure of the angle is 144...the measure of its supplement is 36
(0.00142857)=-x is your answer