Solve the problem.A water tank can be filled in 7 minutes and emptied in 8 minutes. If the drain is accidentally left open when the tank is being filled, how long does it take to fill the tank?
A. 
min
B. 
min
C. 
min
D. 56 min
Answer: D
Mathematics
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Evaluate the spherical coordinate integral.
A. 
?
B.
 ? |
C.
?D.
?
Mathematics
Subtract.8556
A. 8207 B. 213 C. 8213 D. 8127
Mathematics
Solve the problem.The caretaker at the mall puts 300 mL of antistatic into the humidifier every day. How many liters are needed for a six-month (30 days/month) supply?
A. 54,000 L B. 540 L C. 54 L D. 5400 L
Mathematics
Find functions f and g so that F(x) = (f ? g) (x).F(x) = 
A. f(x) = 81x2 + 24, g(x) = 
B. f(x) = 
, g(x) = 81x2 + 24
C. f(x) = 
, g(x) = x2
D. f(x) = 
, g(x) = 
Mathematics