A track team needed to run or jog 20 laps for their practice. Of the total 20 laps, Sara completed 4/5 , Jamie completed 5/8 , Keenan completed 5/9 , Maya completed 0.833, and Trey completed 0.875. Identify the descending numeric order of the laps completed

To compare the laps completed by each athlete, we need to convert all the fractions and decimals to a common format.

Sara completed 4/5 * 20 laps = 16 laps.
Jamie completed 5/8 * 20 laps = 12.5 laps (converted from fraction to decimal).
Keenan completed 5/9 * 20 laps = 11.111 laps (converted from fraction to decimal).
Maya completed 0.833 * 20 laps = 16.66 laps (converted from decimal to fraction).
Trey completed 0.875 * 20 laps = 17.5 laps (converted from decimal to fraction).

Ordering the athletes in the descending order based on their laps completed:
1. Trey - 17.5 laps
2. Maya - 16.66 laps
3. Sara - 16 laps
4. Jamie - 12.5 laps
5. Keenan - 11.111 laps