Answered

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Angles B and C are supplementary. If m∠B = 2x - 40 and m∠C =2x + 20, how would you determine the measure of each angle?

Sagot :

Answer:

B=60 C=120

Step-by-step explanation:

Supplementary angles add up to 180.

so

2x-40+2×+20=180

4×-20=180

4×=200

×=50

B 2(50)-40=100-40=60

C 2(50)+20=100+20=120

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