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Mary works due north of home. her husband Ray works due east. They leave for work at the same time. By the time Mary is 3 miles from home, the distance between them is one mile more than Rays's distance from home. How far from home is Ray?
An ad for a computer printer stated that you could buy the printer for only $280.00, or 80 % of the original price . What was the original price of the printer?
Find the principal amount
Estimate the mean fill amount of a certain bottle-filling machine to within 0.05 liter. Assume that the population standard deviation is 0.17 liters. How large of a sample is needed to estimate the mean with 95% confidence?
What value would you expect to find for the standard deviation of all these sample means? (round to the nearest integer)
the company is considering increasing its advertising by $50,000 in order to sell more car parts. How many additional parts must the company sell in order to justify the increased advertising costs?
A jazz concert brought in $166,500 on the sale of 8,100 tickets. If the tickets sold for $15 and $25 each, how many of each type were sold?
A plane flying horizontally at an altitude of 2 mi and a speed of 520 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 5 mi away from the station. (Round your ans..
This is your final post of the term! What did you think of the format of the class? Did you enjoy the tools and resources used? How do you think this class could have been improved?
a car traveling at 86 km/h when the driver sees an accident 65 m ahead and slams the brakes.. what minimum constant deceleration is required to stop the car in time to avoid a pileup.
Use the method of undetermined coecients to fi nd the general solution of
Consider an annuity-immediate with monthly payments for twenty years. The payments are level in the course of each year, then increase by 2% for the next year. Find the present value of this annuity if the initial payment is $1, 000 and i = 4%.
a rancher has 200 feet of fencing available to enclose two adjacent retangular corrals. Each corral is to be the same size. What dimensions for each corral will maximize the area enclosed by the two corrals?
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