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

A.
B.
C.
D.  - 

Answer: B

Mathematics

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Evaluate the integral.x dx

A. x cos-1x -  + C
B. x cos-1x - 2 + C
C. x cos-1x +  + C
D. x cos-1x -  + C

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Use properties of real numbers to calculate the expression mentally.4 ? 22

A. 26 B. 880 C. 440 D. 88

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For the pair of similar triangles, find the missing side n. Round to the nearest tenth when necessary.

A. n = 4 m B. n = 3 m C. n = 6 m D. n = 9 m

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Factor completely. If the polynomial is prime, state so.375k3m - 81m4

A. 3m(125k - 3m)(k2 + 15km + 9m2) B. 3m(5k - 3m)(25k2 + 15km + 9m2) C. (15km - 9m2)(25k2 + 9m2) D. 3m(5k + 3m2)(25k2 - 15km + 9km2)

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Mathematics