At what -value does the curve defined by have a horizontal tangent?
?

A.
B.
C.
D.
E.


Answer: E

Mathematics

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line  is  Use the idea underlying these two integral formulas to find the surface area of the torus formed by revolving the circle r = a about the line  where 

What will be an ideal response?

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Solve the problem.The sides of a triangle are 9 inches, 10 inches, and 11 inches. If the shortest side of a similar triangle is 45 inches, find its longest side.

A. 49 inches B. 10 inches C. 50 inches D. 55 inches

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Evaluate the improper integral.

A. 168 B. 140 C. 84 D. 112

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Use radical notation to write the expression. Simplify if possible.(-8)4/3

A. not a real number B. 16 C. 64 D. -16

Mathematics