Billy conducted an experiment by rolling a a standard number die 500 times. During this experiment he rolled a three 120 times. What is the theoretical
probability of rolling a three on a standard number die?

Theoretical probability:Rolling once = 1/6Rolling 500 times = 83 times1/6 is your answer!

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.