SOLUTION: The measure of A is 100°. Angles A and B are supplementary. What is mB?

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Question 843955: The measure of A is 100°. Angles A and B are supplementary. What is mB?
Answer by Fombitz(32388) About Me  (Show Source):
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Supplementary means sum to 180.
A%2BB=180
B=180-A
B=180-100