Answer:
x=13
Step-by-step explanation:
18-5=13. You have to subtract 5 from 5 itself and then 18.
The two angles form a straight line which is equal to 180 degrees. This makes the angles supplemtary.
To find x, add the two angles together to equal 180:
7x + x+20 = 180
Combine like terms:
8x + 20 = 180
Subtract 20 from both sides:
8x = 160
Divide both sides by 8:
X = 20
I use it as a short way to say "okay" but I don't know how others may use it.
The answer is B.
The attached file is how I got the answer.
Hope this helped :)
Answer:
D
Step-by-step explanation:
