Rationalize the denominator. Assume that all variables represent positive real numbers and that the denominator is not zero.

A.
B.  - 
C.
D.

Answer: D

Mathematics

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Compute the unit binormal vector and torsion of the curve. r(t) = 

A. B(t) = , ? = - 
B. B(t) = , ? = 
C. B(t) = , ? = 
D. B(t) = , ? = 

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Mathematics

Solve.p2 - 10p + 21 > 0

A. (3, 7), or {p3 < p < 7}
B. (7, ?), or {pp > 7}
C. (-?, 3) ? (7, ?), or {pp < 3 or p > 7}
D. (-?, 3), or {pp < 3}

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Mathematics

Write the expression using a multiple of a logarithm.log6 

A.
B.  log6 6 - log6 13
C. log6  + log6 13
D.  - log6 13

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Mathematics

Evaluate the expression.Let x = 6 and y = -3. Evaluate  + .

A. 2 B. 0 C. -1 D. 1

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Mathematics