VintageKat VintageKat

02-01-2019
Mathematics

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In triangle ABC, measure angle A = 9x, measure angle B = 11x + 2 and measure angle C = 3x - 6. What is the number of degrees in measure angle A?

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02-01-2019

[tex]9x+11x+2+3x-6=180 \\ 23x - 4 = 180 \\ 23x = 180 + 4 \\ 23x = 184 \\ x = 8
A= 9(8)
A= 72

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