Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = 4x2 + 9y2; R = {(x, y): 0 ? x ? 1, 0 ? y ? 1}

A.
B.
C.
D.


Answer: A

Mathematics

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Determine which values of x and y, if any, are not permissible. f(x, y) = 

A. All values of x and y are permissible. B. The point (0, 0) is not allowed. C. y ? 0 D. x ? 0

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Find the rule that defines each piecewise-defined function.

A. f(x) = 

B. f(x) = 

C. f(x) = 

D. f(x) = 

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Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.

A. t4
B. t-7
C.
D.

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Solve the problem.A person burns 6.6 calories per minute while walking. How many calories will be burned if the person walks for 3 hours?

A. 198 calories B. 1188 calories C. 11,880 calories D. 19.8 calories

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