Find the standard-form equation for an ellipse which satisfies the given conditions.An ellipse centered at the origin having vertex at (0, -9) and eccentricity equal to  

A.  +  = 1
B.  +  = 1
C.  -  = 1
D.  -  = 1


Answer: A

Mathematics

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Solve the problem.Pizzicato Pizza, Inc. finds that the cost to make x pizzas (with one topping) is while the revenue produced from them is (C and R are in dollars). What is the smallest whole number of pizzas, x, that must be sold for the company to show a profit?

A. 140 B. 182 C. 40,171 D. 30,719

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Factor. Check by multiplying.48x6y8 + 48x4y6 - 72x2y3

A. 24x2(2x4y8 + 2x2y6 - 3y3) B. 24(2x6y8 + 2x4y6 - 3x2y3) C. 24x2y3(2x4y5 + 2x2y3 - 3) D. No common factor

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Solve the problem.Find f(-2) when f(x) = 2x2 - 4x - 6.

A. 22 B. -6 C. 10 D. 6

Mathematics

Decide whether the statement is true or false.{4, 10, 12} ? {12, 4, 10} = {4, 12}

A. True B. False

Mathematics