when ryan runs the 400 m dash his finishing times are normally distributed with a mean of 75 seconds in your standard deviation of 0.5 seconds use in the empirical rule, determine the interval of times that represents the middle 68% of his finishing times in the 400 m race

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.