Answer:
Only the 2nd and 5th options are correct.
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
2x9= 18
18×-6= -108
Your answer is 108.
Answer:
2/6 more.
Step-by-step explanation:
You need to find a common denominator. In this case it was 6.
