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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