the first x < 3 so x could be from - 1 till 3 in this graph
the other x > - 7 so x could be from from - 7 till - 3 in this graph
X = 400
Explanation:
25% of 160 is 40
This is calculated by solving .25 x 160
Then, we divide 40 by .10 to get x
Answer:
a = 5
b = 12
c = -216
x = -1.2
Step-by-step explanation:
You can get a, b, and c by looking at the coefficients and constant in the equation.
You can find the axis of symmetry by looking at the graph of the equation.
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Answer:
see explanation
Step-by-step explanation:
(1)
x² - 6 = 2 - 18x ( add 18x to both sides )
x² + 18x - 6 = 2 ( add 6 to both sides )
x² + 18x = 8
to complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(9)x + 81 = 8 + 81
(x + 9)² = 89
(2)
(x + 9)² = 89 ( take square root of both sides )
x + 9 = ± 
( subtract 9 from both sides )
x = - 9 ±
