Perform the indicated operations and write the result in standard form.
+ 
A. 36i
B. -13i
C. 13i
D. -13
Answer: C
Mathematics
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Solve the problem.A 200 gal tank is half full of distilled water. At time = 0, a solution containing 1 lb/gal of concentrate enters the tank at the rate of 4 gal/min, and the well-stirred mixture is withdrawn at the rate of 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. 100 pounds B. 200 pounds C. 120 pounds D. 150 pounds
Mathematics
Add.
A. 175 B. 177 C. 176 D. 166
Mathematics
Name the quadrant or axis in which the point lies.(14, 0)
A. quadrant I B. quadrant II C. x-axis D. y-axis
Mathematics
Simplify the expression.(x4)3
A. 3x4 B. 3x12 C. x7 D. x12
Mathematics