Based on the definition of supplementary angles, the measure of both angles are: 80° and 100°.
<h3>What are Supplementary Angles?</h3>
The sum of angles that are supplementary to each other equals 180 degrees.
Let the measure of the supplementary angle be x.
The other angle will be: x + 20.
(x + 20) + x = 180
x + 20 + x = 180
2x + 20 = 180
2x = 180 - 20
2x = 160
x = 160/2
x = 80°
The other angle will be x + 20 = 80 + 20 = 100°.
The measure of the angles are: 80° and 100°.
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3x^3<span> + 17</span>x^2<span> + 21</span>x<span> - 9
this is the correct answer for this problem.</span>
Answer:

<h3> It helps you a lot ☺️</h3>
Thank you ☺️☺️
Answer:
1) 31.1
2) 2.5
3) 1.6
4) 0.9
5) 5120
6) 1.7
7) 972
8) 0.02
Step-by-step explanation: