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Bunuel
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50+y-40=180
y=170
E
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Its easy...we know 50 + ( y -40) = 180 so y will be 170...e it is

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Bunuel

In the figure above, y =

(A) 90
(B) 140
(C) 150
(D) 160
(E) 170

Since we have two supplementary angles, we can sum the two angles to 180 and solve for y:

50 + y - 40 = 180

y = 170

Answer: E
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