math
posted by jim on .
Given ∠ABC, if m∠A=11x, ∠B = 3x + 4, and m∠C = x  4, find the measure of each angle.

A + B + C = 180 Deg.
11x + (3x + 4) + (x  4) = 180,
15x = 180,
x = 180 / 15 = 12.
A = 11X = 11 * 12 = 132.
B = (3X + 4) = 36 + 4 = 40.
C = (X  4) = 12  4 = 8.