Insert a rational number and an irrational number between -2/5 and 1/2

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge

Kelli swam upstream for some distance in a hour. she then swam downstream the same river for the same distance in only 6 minutes. if the river flows at 5km/hr, how fast can kelli swim in still water?