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


Answer: C

Mathematics

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Find the sum or difference.(2x7 + 6x9 - 7 - 7x8) - (2 - 2x8 + 3x9 - 7x7)

A. 3x9 - 9x8 - 5x7 - 5 B. 3x9 - 5x8 + 9x7 - 9 C. 9x9 - 9x8 - 5x7 - 5 D. 9x9 - 9x8 - 5x7 - 9

Mathematics

Determine the additive inverse of the given number.

A. - 
B.
C. - 
D.

Mathematics

Solve the problem.Find the present value of a loan with an annual interest rate of  and periodic payments of  for a term of 5 years, with payments made and interest charged 12 times per year.

A. $26,998.14 B. $29,997.93 C. $11,999.17 D. $14,998.97

Mathematics

Convert as indicated.0.7 m to millimeters

A. 7000 mm B. 700 mm C. 70 mm D. 0.0007 mm

Mathematics