What is one way to determine if a quadrilateral has parallel sides

What is the upper quartile in the box plot?

Find the distance between the pair of points a(-1,8) and b(-8,4)

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?