Simplify the complex fraction.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.A 100 gal tank is half full of distilled water. At time = 0, a solution containing 2 lb/gal of concentrate enters the tank at the rate of 4 gal/min, and the well-stirred mixture is withdrawn at the rate of 
When the tank is full, how many pounds of concentrate will it contain?
A. 175 pounds B. 200 pounds C. 150 pounds D. 187.5 pounds
Mathematics
Find the perimeter of the figure.
A. 56 ft B. 45 ft C. 126.5 ft D. 55 ft
Mathematics
The polar coordinates of a point are given. Find the rectangular coordinates of the point.(-3, 120°)
A. 
B. 
C. 
D. 
Mathematics
Estimate by rounding the addends to the nearest ten:
?
?
A. 420 B. 430 C. 410 D. 440
Mathematics