Find the foci of the ellipse. +  = 1

A. (-2, -11), (-2, 21)
B. (-7, -2), (17, -2)
C. (-11, -2), (21, -2)
D. (-2, -7), (-2, 17)

Answer: C

Mathematics

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Fill in the blank(s) with the appropriate word(s).

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Factor the trinomial.8y2 + 18y + 9

A. (8y + 3)(y + 3) B. (4y + 3)(2y + 3) C. (8y + 1)(y - 9) D. (4y - 3)(2y - 3)

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Solve the problem.Let P(x, y) be a point on the graph of y = x2 - 2. Express the distance, d, from P to the origin as a function of the point's x-coordinate.

A. d(x) = 
B. d(x) = 
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Solve the problem.Find C(x) if C'(x) = 5x2 - 7x + 4 and C(6) = 260.

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B. C(x) = x3 - x2 + 4x - 260
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Mathematics