At the arcade, one of the games gives you the chance to win one of 4 colored yo-yo's. There are 15 red, 20 blue, 5 green, and 10 purple. What is the likelihood of winning a blue yo-yo? Express your answer as a decimal.

What is the rule for reflection across the y axis

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.

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?