Simplify the expression. Write the answer using positive exponents.

A. - 
B. - 
C. x24y4
D. x24y

Answer: C

Mathematics

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Solve the problem.Find the volume of the solid bounded by the elliptical cone  +  =  and the planes  and  (The area of an ellipse with semiaxes a and b is ?ab.)

A. ? units3
B. ? units3
C. ? units3
D.  units3

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Mathematics

Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 

A.

B.

C.

D.

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Mathematics

Divide.

A. 60 B. -60 C. -7 D. 7

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Mathematics

Find an equation of a parabola satisfying the given conditions.Focus at , directrix y = - 

A. x2 = 3y B. y2 = 12x C. x2 = 12y D. y2 = 3x

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Mathematics