Find the integral.

A.   cot 5+ C
B. - 45 cot 5+ C
C. -  cot 5+ C
D. -  tan 5+ C


Answer: C

Mathematics

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Find the center of mass of a thin plate covering the given region with the given density function.The region enclosed by the parabolas y = 18 - x2  and y = x2, with density ?(x) = x2

A.  = 0,  = 9
B.  = 0,  = 
C.  = 9,  = 0
D.  = 0,  = 18

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Solve the problem.A radio transmission tower is 120 feet tall. How long should a guy wire be if it is to be attached 11 feet from the top and is to make an angle of 26° with the ground? Give your answer to the nearest tenth of a foot.

A. 248.6 feet B. 273.7 feet C. 133.5 feet D. 121.3 feet

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Write the expression in standard form.3.323 × 10-5

A. 0.000003323 B. -332,300 C. 0.00003323 D. 0.0003323

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The graph of a logarithmic function is shown. Select the function which matches the graph.

A. y = -log(-x) B. y = log(-x) C. y = log x D. y = -log x

Mathematics