Solve the problem.The base of a rectangular tank measures 10 ft by 20 ft. The tank is 17 ft tall, and its top is 10 ft below ground level. The tank is full of water weighing 62.4 lb/ft3. How much work does it take to empty the tank by pumping the water to ground level? Give your answer to the nearest ft ? lb.
A. 7,531,680 ft ? lb
B. 3,924,960 ft ? lb
C. 1,803,360 ft ? lb
D. 1,803,530 ft ? lb
Answer: B
Mathematics
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A. 8?
B. 3
C. 
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Tasmanian automobile license plates consist of four capital letters (A through Z) followed by three digits (0 through 9).How many Tasmanian license plates start with the word MATH?
A. 100 B. 1 C. 1000 D. 10 E. none of these
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Use rules of exponents to simplify the expression. Use positive exponents to write your answer.
A. x10
B. x60
C. 
D. 
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Give an appropriate answer.Explain the difference between a cluster sample and a stratified sample.
What will be an ideal response?
Mathematics