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
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 -
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)
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
Mathematics