Evaluate the expression for the given values of the variables, if possible.-, for a = 15, b = 9

A. -14
B. 11
C. 12
D. -12

Answer: D

Mathematics

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Graph the curve whose parametric representation is given. x = 9 cos t , y = -4 sin t, 0 ? t ? 4?

A.

B.

C.

D.

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A. 0
B. 9
C. 1
D.

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Give the name of the surface.

A. Oblique rectangular prism B. Square cone C. Oblique cylinder D. Oblique square pyramid

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Simplify and express your answer using positive exponents only.

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