Use the discriminant to decide whether the equation represents a parabola, an ellipse, or a hyperbola.4x2 + 12xy + 9y2 - 8x + 5y = 0

A. Parabola
B. Ellipse
C. Hyperbola

Answer: A

Mathematics

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At what points is the given function continuous?f(x, y, z) = yz cos 

A. All (x, y, z) such that 0 ?  ? 2?
B. All (x, y, z) such that x ? 
C. All (x, y, z)
D. All (x, y, z) such that x ? 0

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Mathematics

Find the product using the formula for multiplying the sum and difference of two terms. Check the answer using the FOIL method. 

A. x2 - 16
B. x2 + 16x - 7
C. x2 - 16x - 7
D. x2 - 

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Mathematics

Factor the trinomial completely.x4 - 9x3 + 14x2

A. (x2 - 2)(x2 - 7) B. x2(x - 14)(x - 1) C. x2(x + 2)(x + 7) D. x2(x - 2)(x - 7)

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Mathematics

Give the center and radius of the circle. Then sketch its graph.x2 + y2 = 25

A. center (1, 1), r = 5

B. center (0, 0), r = 5

C. center (0, 0), r = 25

D. center (1, 1), r = 25

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Mathematics