Evaluate the integral.

A. sec3x sinh (ln  ) + C
B. sinh (ln  ) + C
C. sinh(tan x) + C
D. sec3x sinh(tan x) + C

Answer: C

Mathematics

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A. Estimate: 900; Actual: 1083.81 B. Estimate: 1100; Actual: 1084.81 C. Estimate: 900; Actual: 1093.81 D. Estimate: 1100; Actual: 1083.81

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Determine the real solutions to the system of nonlinear equations.xy = 20x + y = 9

A. (5, 4), (4, 5) B. (6, 3), (3, 6) C. (20, 1), (1, 20) D. (10, 2), (2, 10)

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Provide an appropriate response.If a < 0, which of the following correctly describes -  ?

A. Positive B. Zero C. Not real D. Negative

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Use the cofunction identities to evaluate the expression below without using calculator. sin220° + sin227° + sin270° + sin263°

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

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Mathematics