What is the value of 1/2 plus 1/3

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

The function show two sisters' savings account and the rate at which they plan to deposit money

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers