X=10
-8-x=-3(2x-4)+3x
-8-x=-6x+12+3x
-8-x=-3x+12
-x+3x=12+8
2x=20
x=10
You can check your solution by inputting 10 in all the x’s and solving it:)
The answer is b hope is the correct one
These 2 angles are vertical angles.
Vertical angles are equal.
Set up an equation where 2 angles are equal to each other.
Solve for 'x'.
6x+238 = 3x + 178
3x = 178 - 238 = -60
x = -60/3
x = -20

It's already a square; we don't need to add anything to complete the square.

That's a vertex at x = -1. The corresponding y is y=0.
Answer: Vertex at (-1,0)
As for the other questions cut off there, the axis is the vertical line x = -1 and the range is y ≥ 0.
5 and -5
The brackets indicate absolute numbers meaning the number within the brackets, regardless of positive or negative, is always a positive number