Find the midpoint M of the line segment with the given endpoint J(7,3 and K(1,-7

How do you find principle and simple interest

If 3x+8=3x+8 is it one solution or no solution

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?