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a solution containing 2 lb/gal of concentrate enters the tank at the rate of 4 gal/min, and the well-stirred mixture is withdrawn at the rate of 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. 187.5 pounds
B. 175 pounds
C. 150 pounds
D. 200 pounds
Answer: A
Mathematics
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A. (0, 4) B. (5, 0) C. (4, 5) D. (0, 0)
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Provide an appropriate response. Which statement illustrates the use of the commutative property of addition?
A. 5 + (12 + 4) = (5 + 4) + 12 B. 5 + (12 + 4) = 5 + (4 + 12) C. (12 + 4) × 5 = 5 × (12 + 4) D. 5 + (12 × 4) = 5 + (4 × 12)
Mathematics
Solve the system of equations by graphing.
A. no solution B. (1, -2) C. (-1, 2) D. (-2, 1)
Mathematics
Write the expression without parentheses.-(2n + 9w + 5g)
A. 2n + 9w + 5g B. -2n - 9w + 5g C. 2n - 9w + 5g D. -2n - 9w - 5g
Mathematics