Find the coordinates of the centroid of the given figure. Each region is covered by a thin, flat plate.The region bounded by y = x4, x = 3, and the x-axis
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.Tim and Judy mix two kinds of feed for pedigreed dogs. They wish to make 16 pounds of feed worth $0.38 per pound by mixing one kind worth $0.21 per pound with another worth $0.60 per pound. How many pounds of the cheaper kind should they use in the mix? Round to the nearest whole pound if necessary.
A. 9 pounds B. 12 pounds C. 7 pounds D. 11 pounds
Mathematics
Simplify the complex rational expression.
A. 
B. 
C. 
D. 
Mathematics
Simplify. Do not leave negative exponents in your answer.(-3xy)2
A. -6xy B. 9xy C. -6x2y2 D. 9x2y2
Mathematics
Find a true inequality that involves the real number 
.
A. 
B. 
C. 
D. 
E. 
Mathematics