pinkqueenlove2007 pinkqueenlove2007

29-01-2021
Mathematics

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In the ΔABC the measure of angle A is 2x +3, the measure of angle B is 4x +2, and the measure of angle C is 2x -1. What are the measures of the angles? Help plzzzzzz

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bexwhite2610 bexwhite2610

29-01-2021

Answer:

180° in a triangle

180 = (2x + 3) + (4x + 2) + (2x - 1)

180 = 8x + 4

180 - 4 = 176

176 = 8x

176/8 = x

X = 22

proof:

A = 2 X 22 + 3 = 47

B = 4 X 22 + 2 = 90

C = 2 X 22 - 1 = 43

47 + 90 + 43 = 180°

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