Answer:
see explanation
Step-by-step explanation:
note that 81 = 9 × 9 and 9 = 3 × 3, hence
81 = 3 × 3 × 3 × 3 ( 3 multiplied by itself 4 times )
This can be expressed in short hand form as
81 =
100°
two angles are supplement .
if their sum is equal to 180°
supplement angle of 80° + x = 180°
180° - 80° = 100° answer
divide each by x
