What two factors determine the speed of sound

Aregular polygon has angkes of size 150° each.how many side has the polygon

The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?