sulma
sulma
06-10-2017
Mathematics
contestada
What is the value of y
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casey02
casey02
06-10-2017
Just need to know that the angles in a triangle add up to 180 degrees :
x + y + (x + y) = 180
2x + 2y = 180
x + y = 90
Plugin x = 40 and get
40 + y = 90
y = 90 - 40
= 50
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