You first identify what supplementary angles are,angles that add up to 180.
5x+2+8x+9=180
17x+11=180-11
17x=169
x=169divided by 17
x=9.9411
x=10 when rounded into the next value
8x*10=80+989
Hello!
Explanation:
First, you had to do is multiply by the numbers. And don't forget to used variables.




Answer: → 
Hope this helps!
Thanks!
-Charlie
Answer:
Step-by-step explanation:
Calculate the slope from 2 points.
Substitute either point into the equation. You can use either (3,7) or (5,11)
Solve for b, which is the y-intercept of the line.
Substitute b, -1, into the equation from step 2.
I believe it is the last one y>-1