Hello There!
I believe that the relationships that can help you solve this problem are that the angle is Complementary and Supplementary. It is complementary because within the angle, there is an angle that is 90°. It is also supplementary because the angle itself is 180° making the angle supplementary.
I hope this helps!
-12 + 20 = 8
then divide the answer by -4
8/(-4) = -2
when you divide a negative number, the answer will be the opposite sign of the numerator
-2 is your answer
hope this helps
I am pretty sure it would be 0.09
