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Two students, Mark and Jim, took a standardized test in the fall and again in the spring. The test scores are normally distributed with a mean of 500 and a standard deviation of 100. Mark's scores went from the 60th percentile to the 65th percentile. Jim's scores went from the 90th percentile to the 95th percentile.
Compare these percentile changes. How do their performances compare?
Whose score improved the most or did they both improve equally?
cterial colony doubles every five hours. Can you find the hourly growth factor and hourly growth rate?
The cost C to produce x number of tennis rackets is C=160+12x. The tennis rackets are sold wholesale for $17 each, so revenue R is given by R=17x. Find how many tennis rackets the manufacturer needs to produce and sell to break even.
From a raft 50m offshore, a lifeguard wants to swim to shore and run to a snack bar 100m down the beach. If the lifeguard swims at 1m/s and runs at 3m/s, express the total swimming and running time t as a function of the distance
A tennis tournament is arranged on a straight knockout basis for 2 n players, and for each round, except the final, opponents for those still in the competition are drawn at random. The quality of the field is so even that in any match it is equal..
An invoice dated April 26 for $5,000 contains sales terms of 3/10,1/15,n/30EOM. On May 10, the retailer wishes to make payment that will discharge one-half of the debt.
Determine the number X for the given table and evaluate the number x so that the preceding independence relations hold.
The revenue (in dollars) for selling x lawn mows is R(x). What are the units for the derivative R'(x)? What are the units for the average rate of change in revenue?
Let R be a PID. Consider the Diophantine equation ax+by=N where a,b and N are integers and a,b are nonzero. Suppose x_0, y_0 is a solution: ax_0+by_0=N.
Planet Z is 6,000 km in diameter. The acceleration due to gravity on Planet Z is 10.0 m/s2.
Suppose that the weight (in pounds) of an airplane is a linear function of the total amount of fuel (in gallons) in its tank. When graphed, the function gives a line with a slope of 6.4.
ashley sells balloons at the county fair. in the last box of 200 balloons 60 were blue 24 were red 23 were yellow 55
The perimeter of a certain basketball court is 266 ft, and its length is 35 ft more than its width. find the dimensions of the court.
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