Each of students reported the number of movies they saw in the past year. This is what they reported:
7, 8, 19, 7, 8, 13, 20
Find the median and mean number of movies that the students saw.
If necessary, round your answers to the nearest tenth.

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles