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Explain please thanks
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Explain please thanks

Explain please thanks-example-1
User Guy Yogev
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all the angles inside a triangle add up to 180°.

(2x + 15) + (5x + 5) + x = 180
8x + 20 = 180
8x = 180 - 20
8x = 160
x = 160/8
x = 20
the question is asking what angle B is,
B = 2(20) + 15
B = 40 + 15
B = 55°
User Yukie
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