Perform the indicated operations. Write answers using only positive exponents. Assume variables represent positive real numbers.(9z)1/5 ? (9z)-2/5

A.  
B. (81z)1/5
C.
D. (9z)1/5

Answer: A

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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Provide an appropriate response.Give the definition or an example of the phrase: Rationalizing the denominator.

What will be an ideal response?

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Solve the system of equations.  x - y + 3z = 5-4x + 4y - 12z = 1  x + 4y + z = 9

A. {(1, 0, 2)} B. ? C. {(0, 2, 1)} D. {(1, 2, 0)}

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Find the phase shift of the function.y = -3 cos 

A. 3? units to the right
B.  units to the right
C. ? units to the left
D.  units to the left

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