At maximum speed, an airplane travels 2,400 miles against the wind in 6 hours. flying with the wind, the plane can travel the same distance in 5 hours. let x be the maximum speed of the plane and y be the speed of the wind. what is the speed of the plane with no wind?

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected