There are a total of 36 cars in the parking lot. 12 are blue and the rest are white. What is the ratio of blue to white cars?

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

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2