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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Solve the problem.The hypotenuse of a right triangle is 9 feet long. One leg of the triangle is 3 feet longer then the other leg. Find the perimeter of the triangle.

A.  ft
B.  ft
C. (3 + 9) ft
D. (3 - 9) ft

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Solve by elimination.  x - 2y = -237x - 2y = -53

A. (-4, 8) B. (-9, -5) C. No solution D. (-5, 9)

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Find the exact value.

What will be an ideal response?

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Find an equation for the graph.

A. y = 2 cos 
B. y = 4 cos (2?x)
C. y = 4 cos 
D. y = 2 cos (4?x)

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Mathematics