Determine the indefinite integral.

A. sech x tanh x + C
B. tanh2 x + C
C. sech2 x + C
D.  + C

Answer: D

Mathematics

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Convert the measure to the one that is underlined and then add.38 dL + 7 daL

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Sketch an angle ? in standard position such that ? has the least positive measure and the given point is on the terminal side of ?.(-5, -3) 

A.

B.

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Solve.Find the simple interest when: Principal = $8900, Rate = 9%, Time =  years.

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