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

yes the required equation is consistent