Find an equation of variation for the given situation.y varies inversely as the square of x, and y = 0.12 when x = 0.6

A. y = 
B. y = 
C. y = 
D. y = .57x2


Answer: A

Mathematics

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A.
B.
C.
D. (3x7 + 1)8

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Solve the equation by factoring.25x2 - 90x + 81 = 0

A.
B.
C.
D.

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Factor the trinomial.36 + 13x + x2 

A. (x - 4)(x - 9) B. (x - 4)(x + 9) C. (x + 36)(x + 1) D. (x + 4)(x + 9)

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Use a half-angle formula to find the exact value of the expression.sin 

A. - 
B.
C. - 
D.

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