Solve the problem.It is necessary to have a 40% antifreeze solution in the radiator of a certain car. The radiator now has 60 liters of 20% solution. How many liters of this should be drained and replaced with 100% antifreeze to get the desired strength?
A. 20.0 liters
B. 15 liters
C. 24 liters
D. 30 liters
Answer: B
Mathematics
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Let f(x) = -4x + 4. Find f .
a. 3 b. 2 c. 4 d.1
Mathematics
Solve the problem.Suppose that we wish to seat eight people, 4 men and 4 women, in a row of eight chairs. In how many ways can we seat the people if the men and women must alternate?
A. 80,640 ways B. 576 ways C. 1152 ways D. 48 ways
Mathematics
Provide an appropriate response.Round $7.3989 to the nearest cent.
A. $7.39 B. $7.45 C. $7.40 D. $7.00
Mathematics
Divide using long division.
A. m2 + 7m + 8 B. 6m2 - 6m + 3 C. m2 + 6m + 6 D. 6m2 + 6m + 3
Mathematics