Find the sum of the sequence.

A. 39
B. 30
C. 120
D. 84


Answer: C

Mathematics

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Use mathematical induction to prove the following.6n > 6n-1

What will be an ideal response?

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Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (cos x)x

A. (cos x)x (ln cos x - x tan x) B. ln x(cos x)x - 1 C. ln cos x - x tan x D. (cos x)x (ln cos x + x cot x)

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Find the exact value under the given conditions.Given sin u = , with u in quadrant I, and cos v = , with v in quadrant I. Find cos (u + v).

A.
B. - 
C. - 
D.

Mathematics

Use multiplication to check the answer. If an answer is incorrect, find the correct answer.

A. Incorrect; should be 40,810 R5 B. Incorrect; should be 40,810 R6 C. Correct D. Incorrect; should be 40,811 R4

Mathematics