Add.4 + (-14)
A. -18
B. 18
C. -10
D. 10
Answer: C
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Water is being pumped from a tank. The amount W, in gallons, of water remaining in the tank after t hours is given by
.
?
How long will it be before there are 1,387 gallons of water left in the tank? Round your answer to two decimal places if necessary.
?
A. After 6.48 hours B. After 5.33 hours C. After 3.39 hours D. After 5.37 hours
Solve the problem using two linear equations in two variables and Cramer's rule.Twice the water flow in the hot-water pipe is the same as three times the flow in the cold-water pipe. The combined flow is 1400 liters/hr. What is the flow in each pipe?
A. 700 liters/hr hot, 467 liters/hr cold B. 840 liters/hr hot, 560 liters/hr cold C. 467 liters/hr hot, 700 liters/hr cold D. 560 liters/hr hot, 840 liters/hr cold
Solve.Eight individually powered machines have motors that use 455 watts each. What is the total wattage used when all machines are running?
Fill in the blank(s) with the appropriate word(s).
Solve the problem.Suppose that during a certain step in a chemical manufacturing process the amount of hydrogen chloride dissolved in a solution, measured in parts per million (ppm), is related to the elapsed time measured from the beginning of the step. Use the following table as a representation of this relationship. Make a scatter diagram of the data. What is happening to the amount of hydrogen chloride in solution during this time frame?
A. The amount of hydrogen chloride dissolved
increased as time elapsed.
B. The amount of hydrogen chloride dissolved
increased as time elapsed.
C. The amount of hydrogen chloride dissolved
decreased as time elapsed.
D. The amount of hydrogen chloride dissolved
increased as time elapsed.