Its line 1
if we expand the second and third expressions they come back to the first.
The last one is called the vertex form of a parabola
ANSWER: The number is 10.
Hope this helps!!
I used the variable n as the number we needed to find. The equation was n + 8 + 12 = 3n
Combine like terms. The 5x is grouped to the 8x and the -7 isgrouped with the -55.
This means 5x + 8x = 13x and -7 - 55 = -62
The new expression is 13x - 62. We can't find the exact value of x because the expression wasn't set equal to anything.
Answer is A or your first option.
The value of X is 35 because the angle 35 measures the same as the angle X, hence their values are the same