Select the x-coordinate of the vertex of the parabola defined by the function f(x) = -7x2 + 3x + 7. (a)-7/3 (b) 7 (c)3/14 (d)-3/7
The x-coordinate of the vertex of the parabola defined by the function f(x) = -7x^2 + 3x + 7 is 3/14 . x-coordinate = -3/{2*(-7)} = -3/-14 = 3/14
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Asked 1/23/2014 4:18:51 PM
Updated 11/21/2014 12:39:45 AM
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The x-coordinate of the vertex of the parabola defined by the function f(x) = -7x^2 + 3x + 7 is 3/14 .
x-coordinate = -3/{2*(-7)} = -3/-14 = 3/14
Added 11/21/2014 12:39:45 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [11/21/2014 1:13:41 AM]

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Solve for x in the equation x2 - 6x - 7 = 0. (a){-1,-7} (b){1,-7} (c){-1,7} (d){1,7}
Question
Updated 9/15/2014 8:44:32 AM
The solution for x in the equation x^2 - 6x - 7 = 0 is {-1,7}.
x^2 - 6x - 7 = 0
(x + 1)(x - 7) = 0
x + 1 = 0 or x - 7 = 0
x = -1 or x = 7
Added 9/15/2014 8:44:32 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [9/15/2014 8:50:17 AM]
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Updated 9/15/2014 8:51:16 AM
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