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A chemist needs 150 milliliters of a 23% solution but has only 12% and 27% solutions available. Find how many milliliters of each should be mixed to get the desired solution.
Soybean meal is 14% protein, cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280 pound mixture that is 8% protein?
Four positive numbers, each less than 90, are rounded to the first decimal place and then multiplied together. Use differentials to estimate the maximum possible error in the computed product that might result from the rounding.
A=(LP)/2-L^2, gives the area of a rectangle of perimeter P and length L. Suppose that you have 600 feet of fencing which you plan to use to fence in a rectangular area of land.
Model each rule with a table of values and a graph.
Single women. The percentage of women in the 20-24 age group who have never married went from 55% in 1970 to 73% in 2000 (Census Bureau, www.census.gov). Let 1970 be year 0 and 2000 be year 30.
Compute the total present value of a series of 5 future payments of $20,000 each which are to be received 12, 14, 16, 18, and 20 years from now when interest is compounded continuously at rate 10% per year.
A manufacturer of lightning fixtures has a daily production costs of C(x)=800-10x+0.25x^2 where C is the total cost (in dollars) and x is the number of units produced.How many fixtures should be produced each day to yield a minimum cost?
Probability & Statistics Questions. A machine produces 12,000 bolts per day, with a 3% defect rate. What is the probability that twelve defective bolts will be found in a sample of 600 bolts?
Write equations for vertical and horizontal lines passing through the point (-6,5) in (x,y) coordinates. A line passes through the point (x,y)= (-9,-5)and has a slope of -8. Write an equation for the line.
This past Sunday, the paid revenue was $12,066 for 846 tickets sold. There were 44 more children than adults. How many children attended?
Mark a point at the intersection of two rulings. The lattice point. Seven units to the right and four units up, mark another. Use a ruler to find the distance from one point to the other
Calculate the average rate of change.
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