Hello :
<span>x² + 4x – 4 = 8
x²+4x -12 = 0
(x²+2(2)(x)+2²)-2² -12 =0
(x+2)² -16 = 0
(x+2)² = 4²
x+2 = 4 or x+2 = -4
x=2 or x= -6</span>
Answer:
d
Step-by-step explanation:
because with 10$ off it will be 70$ but with 25 percent off it will be 60$
84.50 x 18.0 = 15.21 (tip) so total bill will be 84.50 + 15.21 = $99.71
Answer:
y = 49
x = 15
Step-by-step explanation:
The angle is 90 degrees and on one side of the bisector is 41 so to find y all you have to do is 90 - 41 = 49
(7x + 13) + (2x - 9) + 41 = 180
add like terms - 9x + 45 = 180
subtract - 9x = 135
Divide - x = 15