What is it when you divide the total distance traveled by the total time

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

True or false graphs must include scales that increase by the same amount