Question

The measures of the angles of △ABC are given by the expressions in the table.

AND ITS NOT MULTIPLE CHOICE! REMEMBER ANGLE ABC ADD UP TOO 180

Angle Measure
A = (4x-13)°
B = 15°
C = (x+18)° What are the measures of angles A and C?

Answer 1

A + B + C = 180
4x-13 + 15 + x+18 = 180
5x + 20 = 180
5x = 160
  x =32

A = (4x-13) = 4(32) - 13 =   115
C = (x+18) = 32 + 18 = 50