The ratio of two supplementary angles is 4:5. Find the measures of each angle.

80

100

Step-by-step explanation:

Let the multiplier = x

4x + 5x = 180 Combine the left

9x = 180 Divide by 9

9x/9 = 180/9

x = 20 Use x to find the two angles

4x = 4 * 20 = 80

5x = 5 * 20 = 100

The two angles are 80 and 100 which is 80/100 = 4//5