Answer:

Step-by-step explanation:
Given

See attachment
Required
Determine the measure of 
and
are on a straight line.
So:
--- angle on a straight line
Substitute known values

Collect like terms


All of them except A and C are equivalent.
Answer:
6.) -3.544
Step-by-step explanation:
6.2(x+3.5)-x =6.2x+21.7 -x =6.2x-x+21.7 =5.2x+21.7
-3(6-2x) =-18(+-)6x =-18-6x
5.2x +6x=-18-21.7
11.2x=-39.7
x=-39.7÷11.2
x=3.544
The answer would be D - 1/6
This is because there are six sides to the die and just because he rolled all 3s before it does not mean he has a better chance to roll a 3 now.
Since there is only 1 3 on the six sided die there is a 1/6 chance he would roll a 3.
3(y-9)-y=7
3y - 27 -y = 7
2y = 34
Y = 17
3(x) -17 = 7
3x = 24
X = 8