Pls show work for this math problem 100%
2 answers:
Answer:
X + 78
m<B= 10
Step-by-step explanation
Got it correct on quiz/
Answer:
x = 11, ∠ B = 71°
Step-by-step explanation:
In a parallelogram, consecutive angles are supplementary, that is
∠ A + ∠ B = 180°, thus
8x + 21 + 5x + 16 = 180
13x + 37 = 180 ( subtract 37 from both sides )
13x = 143 ( divide both sides by 13 )
x = 11
Thus
∠ B = 5x + 16 = 5(11) + 16 = 55 + 16 = 71°
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