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The area of a rectangleis 288 yd squared. the perimeter is 68 yd. if you double the length and width what will the area and perimeter of the new rectangle be?
Assume that the number of highway miles that can be graded , is a function of both the hours of labor and of the number of machines. Find the minimum cost of grading 20 miles given that the hourly rates for labor and machines are $ and $.
The normal body temperature measured by placing the thermometer under the tongue is assumed to be normally distributed with a standard deviation of 0.7oC. Body temperatures of 52 subjects were recorded and the average is 36.83oC.
Fertilizer A contains 5 units of phosphate, 2 units of nitrate and 2 units of ammonium. Fertilizer B contains 3 units of phosphate, 3 units of nitrate and 5 units of ammonium. How many pounds of each fertilizer should the shop use in order to mini..
Fenton and Farrah Friendly, husband-and-wife car dealers, are soon going to open a new dealership
In each situation below, is it reasonable to use a binomial distribution for the random variable X? Give reasons for your answer in each case.
you place 5000 in a saving account earning 2.50 interest compounded annually. how much will you have at the end of four
Let p be a prime. Show that in the ring Z-p (set of integers modulo p) we have (a+b)^p = a^p+b^p for all a, b in Z-p. The following hint was given:
The surrounding lawn is to be 10m wide on the north and south sides of the garden and 3m wide on the east and west sides. Find the dimensions of the rose garden if the total area of the rose garden and the lawn together is to be a minimum.
For the normal distribtion, the mean plus and minus 1.96 standard deviation will include what percent of the observations? What is the formula to calculate the percentage?
a. find a function s given by st a cos ?t that models the displacement of the weight.b. evaluate s1. is the weight
90% confidence interval for the difference in average absorption time for the two drugs. Does it appear that one drug is absorbed faster than the other (at the 90% level)? Explain
A chain store manager has been told by the main office that daily profit, P, is related to the number of clerks working that day, x, according to the function P=-25x^2+300x. What number of clerks will maximize the profit, and what is the maximum p..
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