Mon is 99 degrees could you also check out my most recent question I really need help on it
A+b=b+a because communitive is he move stuff around and the only difference is a and b being moved around.
The slope-intercept form of a line is:
y=mx+b
m=slope=(y2-y1)/(x2-x1)
b=y-intercept (the value of y when x=zero)
Answer:
x = -8
Step-by-step explanation:
5x - 4 + 7x = 5(2x - 4)
12x - 4 = 10x - 20
<u> +20 +20</u>
12x + 16 = 10x
<u>-12x -12x</u>
16 = -2x
divide by -2
x = -8
One side is -4.
It can also be x + 4.
Turn 16 + 8x + x^2 into standard form —> x^2 + 8x + 16
Note: standard form is ax^2 + bx + c
Use the “foil” method to factor.
(x + 4)(x + 4)
x=-4