1) x^2 + 8x + 16 = (x+4)^2
Answer: C. 16
2) x^2 + 4x + 4 = (x+2)^2
Answer: B. 4
I'm not sure how the number line looks. Do you have a picture of it?
Radius is 5 cm. is the answer
3 5 8
(4 x 10 )(2 x 10 )= 8 x 10
Answer:
x=-5, y=-2
Step-by-step explanation:
6x+ 28 =y
5x-y=-23
Substitute 6x+28 in for y in the second equation
5 x-(6x+28)=-23
Distribute the negative sign
5x -6x-28 = -23
-x -28 = -23
Add 28 to each side
-x-28+28 = -23+28
-x = 5
Multiply by -1
x = -5
Now we need to solve for y
y = 6x+28
Substitute x=-5
y = 6(-5) + 28
y = -30+28
y = -2
