Jeff starts driving at 45 miles per hour from the same point that lauren starts driving at 40 miles per hour. they drive in opposite directions, and lauren has a half-hour head start. how long will they be able to talk on their cell phones that have a 270-mile range?

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

What is not true about kl and mn? what is mn? (show )

Agroup of randomly selected members of the foodies food club were asked to pick their favorite type of food. the bar graph below shows the results of the survey. there are 244 members in the foodies.