Find all specified roots.Seventh roots of i.

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

Answer: C

Mathematics

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Write out the first five terms of the sequence.an = 2n

A. 4, 8, 16, 32, 64 B. 1, 4, 9, 16, 25 C. 1, 2, 4, 8, 16 D. 2, 4, 8, 16, 32

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Solve the problem.The population of a small town is given by the table. If the population is modeled by p(t) = at2 + b where t is in years and  corresponds to the year 1980 and  corresponds the year 1990, find a.

A. 32 B. 14 C. 16 D. 28

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Divide. ÷ 

A. - 1 
B.
C. -  
D. - 34 

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Use a double-angle formula or a half-angle formula to simplify 2sin12cos12.

(a) sin 24 (b) cos 24 (c) sin12 (d) cos12 (e) none of these

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Mathematics