Is 13/3 a rational number

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?

Which strategy is used by public health to reduce the incidence of food poisoning?

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?