There are 15 basketballs for every 9 baseballs in gym class. What is the ratio of baseballs to basketballs?

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog