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

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]

Simplify the expression: (5/64) (a)5/4 (b) (5/4) (c)5/ 4 (d)5/64 **Weegy:** (5/64) = D. 5/64 - it is irreducible. (More)

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Asked 1/23/2014 2:46:06 PM

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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}

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Updated 9/15/2014 8:44:32 AM

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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

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]

Select the value of x that is a solution for this equation:6/x=7/(x+3) (a)-3 (b)18 (c)6 (d) 9
**Weegy:** 6/x = 7/(x + 3);
7x = 6(x + 3);
7x = 6x + 18;
7x - 6x = 18;
x = 18 (More)

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Updated 9/15/2014 8:51:16 AM

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