Question

(y+20)° and 3y° are supplementary angeles then find the measures of each angle
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Answer 1

Answer:

y+20⁰+3y = 0

4y = -20

y = -5

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Answer 2

Answer:

as the angles are supplementary,

so,

y+20+3y=180

4y=180-20=160

y=160/4=40

so the angles are (40+20)°=60°

and 3.40°=120°