Multiply the first equation by -2 to eliminate a variable so it becomes:
-12x+8y=48
4x-8y=-32
Add them together.
-8x=16
x=-2
Plug it in one equation.
6(2)-4y=-24
12-4y=-24
-4y=-12
y=3
Ordered pair is: (-2,3)
Answer:
B.0.31
Step-by-step explanation:
% of change = amount of change/original price
R=(P-D)÷P
39-27=12
12÷39=.307
≈.31
Answer: 
Step-by-step explanation:
Given
Function is 
Zeroes of the function are

Using completing the square method

Answer:
x = 101°
Step-by-step explanation:
15 + 25 + 39 + x = 180
79 + x = 180
x = 101