Yooo please answer and I’ll give you a high five

Find the value of x. give reasons to justify your solutions! c ∈ ae

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?

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!