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 L
B. 24 L
C. 15 L
D. 30 L
Answer: C
Mathematics
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Find the domain of the function.f(x) = 
A. {x|x ? -12} B. {x|x > -12} C. {x|x ? 0} D. all real numbers
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Simplify. Assume that all variables represent any real number.
A. 11 B. -33 C. -11 D. 33
Mathematics
Suppose ? is an angle in standard position. Given either a point on the terminal side of ? or an equation of the terminal side of ?, give the exact value of the indicated trigonometric function(s). (-5, 9); find sin ?.
A. 
B. - 
C. 
D. 
Mathematics
Decide whether 
What will be an ideal response?
Mathematics