Question

if 2x+10 and 120 - x are supplementary angles then find x​

Answer 1

Answer:

50°

Step-by-step explanation:

(2x + 10) + (120 - x) = 180° (Given)

2x + 10 + 120 - x + 180°

2x - x + 120 + 10 = 180°

x +130 = 180°

x = 180° - 130°

x = 50°

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Answer 2

Answer:

I think x=115°

because

2x+10=0

x=5

put x=5 in

120-x

then,120-5=115°