Rationalize the denominator and simplify. Assume all variables represent nonnegative real numbers.

A.
B.
C.
D.

Answer: A

Mathematics

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Use Stokes' Theorem to calculate the circulation of the field F around the curve C in the indicated direction.F = -5yi + 2xj - 4z3k ; C: the portion of the plane 3x + 8y + 2z = 4 in the first quadrant

A.
B. 0
C. - 
D. 7

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Mathematics

Solve the given differential equation. - 36y = sin x + 6 cos x

A. y = c1e6x + c2e-6x -  sin x -  cos x
B. y = c1e6x + c2e-6x + -  sin x +  cos x
C. y = c1e6x + c2e-6x -  cos x -  sin x
D. y = c1e6x + c2e-6x -  sin x -  cos x

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Mathematics

Find the product.-0.03(0.2)

A. 0.6 B. -0.0006 C. -0.006 D. 0.06

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Mathematics

Solve.John and Tony start from Grays Lake at the same time and head for a town 10 miles away. John walks twice as fast as Tony and arrives 3 hours before Tony. Find how fast each walks.

A. Tony's speed =  m/h and John's =  m/h.
B. Tony's speed = 3 m/h and John's = 6 m/h.
C. Tony's speed =  m/h and John's =  m/h.
D. Cannot be determined with information given

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Mathematics