What are the key aspects of any parabola? what do the key aspects tell you about the graph?

A parabola is an open curve that is formed when a cone is sliced parallel to the side of it. The key aspects of a parabola when it is graphed looks like a curve that opens upward, downward, leftward or rightward. It has a latus rectum which is the length of the ends of a curved line. The directrix is the distance between the vertex of a parabola and the line. The vertex is the point where the curve ends. 

529 and 531

step-by-step explanation:

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons