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21-03-2017
Mathematics

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Angle A and Angle B are complementary. Measure angle A = 2x and measure angle B = 4x + 30°. What is the measure of the angle supplementary to angle A?

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Аноним Аноним

22-03-2017

2x+4x+30=90
6x+30=90
-30 -30
6x=60
/6 /6
x=10
A=2*10
A=20

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