Can anyone help me with this one?
1 answer:
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Answer:
x = - 7, x = 1
Step-by-step explanation:
Given
x² + 6x = 7
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(3)x + 9 = 7 + 9
(x + 3)² = 16 ( take the square root of both sides )
x + 3 = ± = ± 4 ( subtract 3 from both sides )
x = - 3 ± 4
x = - 3 - 4 = - 7
x = - 3 + 4 = 1
Solution set = { - 7, 1 }
Answer:
66
Step-by-step explanation:
Vol = Bh where B is the area of the base and h is the distance between the bases (height)
The base is a right triangle and has an area of
B = 1/2bh = 1/2(4)(3) = 6
h = 11
V = 6(11) = 66