26-10-2017
Mathematics

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Please help explanation needed 22 points

Please help explanation needed 22 points class=

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26-10-2017

alternate interior angles are:
(2x-70) = (x+30)
2x-x = 30+70
x = 100

the angle 5y is supplementary to the other angle.
5y + (100+30) = 180
5y + 130 = 180
5y = 180-130
5y = 50
y = 50/5
y = 10

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