SOLUTION: 2.If angle R = (30 - y) and angle S = (9y - 10) and R and S are supplementary, find y.

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Question 430194: 2.If angle R = (30 - y) and angle S = (9y - 10) and R and S are supplementary, find y.
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 
Hi
and R and S are supplementary
(30-y) + (9y-10) = 180°
8y = 160°
y = 20°
CHECKING our Answer***
10° + 170° = 180°

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