David biked 15 9/10 miles on saturday and 6 7/10 miles on sunday. how much farther did david bike on saturday then on sunday? show all of your work.

What are correct trigonometric ratios that could be used to determine the length of ln

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.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much