Answer:
i think that is 147
Step-by-step explanation:
Since you have y alone on one side of the equation......
Use substitution and plug in 1/2x-4 for y in the other equation.

Distribute

Combine like terms

Add 8 to both sides

Divide by 4
and 
Plug this value in for x

Simplify

Multiply everything by 8 and simplify

Divide.....

Your answers are:

This is the graph for the equation, it crosses through points (0,-8) (-2,4) (-1.6,0) and its vertex is (-2,2)
Hope this helps !!
Answer: 90 degrees to 120 degrees
D
Step-by-step explanation:
Answer:
C, C
Step-by-step explanation:
1. The opposite sides are equal length and parallel, so this is a parallelogram.
Answer C.
2. The length of the midsegment of a trapezoid is the average of the lengths of its top and bottom.
9.2 = 1/2 (12.6 + x)
18.4 = 12.6 + x
x = 5.8
Answer C.