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

A.
B. 7r-6
C. 7
D. 7r6

Answer: D

Mathematics

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A. 0.857142
B. 0.
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D. 0.

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A. 3.1096 B. 7.1601 C. -7.1601 D. -3.1096

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Express as a single logarithm.63 log7 + log7(63x3) - log7 63

A. log7 x12 B. log7 x16/3 C. log7 x10/9 D. log7 x12/7

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Identify the quadrant for the angle ? satisfying the following conditions.tan ? < 0 and sin ? < 0

A. Quadrant I B. Quadrant III C. Quadrant IV D. Quadrant II

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