Simplify the expression. Assume that all variables are positive when they appear.

A. 4 
B. 125
C.
D.


Answer: D

Mathematics

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Find the exact value under the given conditions.sin ? = ,   < ? < ?; cos ? = , 0 < ? < Find sin (? - ?).

A. - 
B.
C.
D.

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Find the weighted mean. Round to the nearest tenth.

A. 7.2 B. 23.6 C. 26.0 D. 22.3

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Use mathematical induction to prove the statement is true for all positive integers n.1 + 4 + 42 + . . . + 4n - 1 = 

What will be an ideal response?

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Solve the problem.Find the dimensions of a rectangular enclosure with perimeter 64 yd and area 247 yd2.

A. 14 yd by 18 yd B. 13 yd by 19 yd C. 14 yd by 19 yd D. 13 yd by 18 yd

Mathematics