5x + 12 + 6x - 30 = 180
11x - 18 = 180
11x = 198
x = 18
Angle A:
(5 * 18) + 12
90 + 12 = 102 degrees
Angle B: ??
ANGLE A AND B ARE SUPPLEMENTARY. THE MEASURE OF ANGLE A IS 5X+12 AND THE MEASURE OF ANGLE B IS 6X-30. FIND THE MEASURMENT OF EACH.
2 answers
supplementary angles add up to 180°
so ...
5x + 12 + 6x - 30 = 180
continue ....
so ...
5x + 12 + 6x - 30 = 180
continue ....