Solve the problem.To approximate the speed of a river, a circular paddle wheel with radius 0.68 feet is lowered into the water. If the current causes the wheel to rotate at a speed of 8 revolutions per minute, what is the speed of the current? If necessary, round to two decimal places.
A. 34.18 mph
B. 0.19 mph
C. 0.39 mph
D. 0.06 mph
Answer: C
Mathematics
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Complete.52300 cu cm = 
L
A. 5230 B. 5.230 C. 52.3 D. 523
Mathematics
Find the distance between the point (9,9,3) and the plane 15x-3y-8z= 10. Round your answer to two decimal place.
Select the correct answer. a. 4.79 b. 6.79 c. 4.29 d. 7.79 e. 5.79
Mathematics
Find the area of the square. 
A. 32 sq mi B. 64 sq mi C. 67 sq mi D. 60 sq mi
Mathematics
Solve the problem.A $100,000 trust is to be invested in bonds paying 9%, CDs paying 7%, and mortgages paying 10%. The sum of the bond and CD investment must equal the mortgage investment. To earn an $9100 annual income from the investments, how much should the bank invest in bonds?
A. $50,000 B. $20,000 C. $30,000 D. $28,000
Mathematics