Answer:
100 and 80 degrees
Step-by-step explanation:
Supplementary angles add up to 180 degrees. Here we are to find two such angles that are in the ratio 5:4. To do this, we set up and solve the following equation:
5x + 4x = 180, or
9x = 180, or
x = 20.
Then one angle is 5(20) and the other is 4(20), or 100 and 80.
Note that these two angles add up to 180 degrees, as they must.
The two supplementary angles are 100 and 80 degrees.
