An empty swimming pool can be filled in 11 hours. When full, the pool can be drained in 25 hours. How long will it take to fill the empty pool if the drain is left open?
?
A. 27 hours
B. 21 hours
C. 20 hours
D. 22 hours
E. 19 hours
Answer: C
Mathematics
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Perform the division. Write the answer with positive exponents.
A. 3x - 16x3 + 
B. 6x - 4
C. 3x - 4
D. 3x - 4 + 
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Solve the equation by the method of your choice. Simplify irrational solutions, if possible.3x2 = 4x + 7
A. 
B. 
C. 
D. 
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Simplify.24 - (16 ÷ 4) + 5 ? 22
A. 28 B. 40 C. 22 D. 100
Mathematics