Since angles a and b are supplementary, their measures add up to 180 degrees.
If m<b = 43, and the two angles are supplementary, then m<a = 180 - 43
Therefore, m<a = 137.
The answer is C. 137.
WHAT IS THE ANSWER A B C OR D angles a and b are supplementary angles. what is the value of m<a if m<b = 43 A. 47 B. 223 C. 137 D. 43
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