Find all the complex roots. Write the answer in the indicated form.The complex square roots of 2 (cos  + i sin ) (rectangular form)

A.  + i, -  - i
B.  + i, -  - i
C.  - i, -  + i
D. 6 - 2i, -6 - 2i


Answer: A

Mathematics

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Solve.A lamp shade has the geometric form as shown. The total surface area of a lamp shade with a slant height s and top and bottom base radii of r2 and r1 is given by  Find an equivalent expression for the total surface area by factoring out a common factor. 

A. ?(r1 + r2)(r1 + r2 + s)
B. ?r1(r1 +  + s + sr2)
C. ?(r12 + r22 + sr1 + sr2)
D. ?(r1 + r2)(r1 + r2 + sr1r2)

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Solve the problem.Crafty Bill's Cool Car Sales opened as a used car sales lot in 1991. The graph shows the number of cars sold as a function of time. Is this the graph of a function? What is the domain?

A. Function; Domain: [2007, 2011] B. Not a function; Domain: [2007, 2011] C. Not a function; Domain: [2005, 2011] D. Function; Domain: [2005, 2011]

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Solve the problem.During one year, the Larson's real estate bill included $575 for local schools. Of this amount, $120 went to the high school district. What percent did the Larsons pay to the high school district? Round your answers to the nearest tenth, if necessary.

A. 6900% B. 79.1% C. 20.7% D. 20.9%

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Determine the maximum number of turning points of f.f(x) = 8x3 + 2x2 - 5x - 6

A. 3 B. 2 C. 0 D. 8

Mathematics