Total distance divided by total time is called what?

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

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.

If m 17 27 90 63 ** picture is attached