Find the least common denominator. and 

A. 112
B. 336
C. 168
D. 672


Answer: B

Mathematics

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Find the value of the expression. ? ?

A. - 60 B. 60 C. 50 D. - 50 E. 0

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Find all specified roots.Seventh roots of 1.

A. 1, cis , cis , cis , cis , cis , cis 
B. -1, cis , cis , cis , cis , cis , cis 
C. 1, cis , cis , cis , cis , cis , cis 
D. 1, cis , cis , cis , cis , cis , cis , -1

Mathematics

Solve problems using a calculator.An electric meter installed by a construction company at a work site read 986 kilowatt hours on July 1 and 10,649 kilowatt hours on August 1. How many kilowatt hours of electricity were used at the site during the month of July?

A. 9662 kilowatt hours B. 9665 kilowatt hours C. 9663 kilowatt hours D. 9664 kilowatt hours

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Find the volume of the solid generated by revolving the shaded region about the given axis.About the x-axis  

A. 9?
B. ?
C. ?
D. ?

Mathematics