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Mathematics, 05.11.2019 01:31 dirtridersteve65

What is the x coordinate of the vertex of the parabola whose equation is y=3x^2+9x?

a. -3
b. -1 and a half
c. -2/3

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What is the x coordinate of the vertex of the parabola whose equation is y=3x^2+9x?

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