Answer:
D
Explanation:
Using the properties of a parallelogram
• opposite sides are congruent
• consecutive angles are supplementary
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5y = y + 8 ( subtract y from both sides )
4y = 8 ( divide both sides by 4 )
y = 2
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4x + 2x - 6 = 180
6x - 6 = 180 ( add 6 to both sides )
6x = 186 ( divide both sides by 6 )
x = 31