Can you please help and show the work. You need to solve by completing the square. The question is in the image below

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Solve 3x-18=2y and 5x-6y=6 by elimination show work

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air