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28-11-2016
Mathematics

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(PHOTO) find the measure angle of (3x-14) degrees in the triangle.

PHOTO find the measure angle of 3x14 degrees in the triangle class=

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baabaagreysheep baabaagreysheep

28-11-2016

You do this by creating an equation with the expressions you've been given, and then solving:
3x - 14 + x + 90 = 180
4x - 14 + 90 = 180
- 90
4x - 14 = 90
+ 14
4x = 104
÷ 4
x = 26
Then you substitute 26 into (3x - 14):
3(× 26) - 14 = 78 - 14 = 64
So your answer is 64°

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