Marian is a sprinter, running short distances on the track team. she wants to find how fast she runs in miles per hour. what units should she start with?

What's the difference between: x≥0 and nonnegative integer. ?

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?

Randy and trey take turns cleaning offices on the weekends. it takes randy at most 4 hours to clean the offices. it takes trey at most 6 hours to clean the offices. what is the greatest amount of time it would take them to clean the offices together? 2.4 hours 2.5 hours