Find the LCM.50x5y, 90x4y3, and  45x2y4

A. 150x5y4
B. 225x20y12
C. 90x5y
D. 450x5y4

Answer: D

Mathematics

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Perform the indicated operation without the use of a calculator and express each answer in decimal notation.

A. 0.00142857 B. 700 C. 100 D. 0.07

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Find the area of the specified region.Inside the lemniscate r2 = a2 sin 2?, a > 0

A.
B. 0
C. a2
D. ?a2

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Multiply in the indicated base.

A. 3236eight B. 3326eight C. 3226eight D. 326eight

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Write the decimal as a fraction or mixed number in lowest terms.-0.672

A. - 
B. - 
C. - 
D. - 

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