Simplify.

A. y
B.  
C.
D.

Answer: C

Mathematics

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A. -4(cot-1 x)5 + C
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Solve.z + 1 = 8

A. 7 B. 9 C. -9 D. -7

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Find the perimeter.

A. 39 cm B. 55 cm C. 45 cm D. 49 cm

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