Find all specified roots.Fifth roots of 1.

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

Answer: A

Mathematics

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Combine. Simplify the answer. +  + 

A.
B. 2
C. 1
D.

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Determine whether the triangles in the given pair are congruent. If so, state the property that shows the triangles are congruent.

A. congruent; ASA B. not congruent C. congruent; SSS D. congruent; SAS

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Find the sum.

A. 69 B. -732 C. -2460 D. Does not exist

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Solve the problem.If P(A) = 0.3, P(B) = 0.5, and P(A and B) = 0.1, then what is P(A or B)?

A. 0.6 B. 0.7 C. 0.9 D. 0.8

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Mathematics