0.8. (a - 30) and (2a)º are the measures of two supplementary angles. Find the measure of each
angle.
angle,
a-30)+(29)--180
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Step-by-step explanation:
Supplementary angles = 180
a - 30 +2a = 180
3a - 30 = 180
3a = 180 + 30
3a = 210
a = 210/3
a = 70
a -30 = 70 - 30 = 40
2a = 2 × 70 = 140
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