Solve the problem.How many liters (L) of a 20% alcohol solution must be mixed with 40 L of a 50% solution to get a 40% solution?
A. 60 L
B. 20 L
C. 2 L
D. 6 L
Answer: B
You might also like to view...
Graph the pair of parametric equations with the aid of a graphing calculator.x = 6 sin t - sin 6t, y = 6 cos t - cos 6t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Provide an appropriate response.
and 
__________.
A. are perpendicular B. coincide C. intersect D. are parallel
Provide an appropriate response.Explain how the graph of y = -5
x can be obtained from the graph of y = 4x.
What will be an ideal response?
Solve the problem.Prices in an economy with a 12% annual inflation rate can be modeled by P = pert, where r is the inflation rate, t is the time in years, and p is the current price. How long will it take for prices in the economy to double at a 12% annual inflation rate?
A. 23.45 years B. 6.78 years C. 9.16 years D. 5.78 years