Solve the problem.A coin has a circumference of 68.14 mm. Find its radius and area. Round the radius and area to the nearest hundredth. (Use 3.14 to approximate 
A. 213.94 mm; 3644.57 mm2
B. 21.7 mm; 1478.59 mm2
C. 10.85 mm; 369.65 mm2
D. 10.85 mm; 1160.70 mm2
Answer: C
Mathematics
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Simplify. Express your answer with positive exponents. Assume that all variables are nonzero.(x-4y5)-3
A. 
B. 
C. 
D. 
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Multiply.(3x3y2)(-6xy2)(-7x5y)
A. -10x9y5 B. 126x9y5 C. -10x15y4 D. 126x15y4
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For problems 1-3, find any real boundary values for each rational inequality.
A. 
B. 
C. 
D. 
E. none of these
Mathematics