Jasmine rides her bike 9 miles in 50 minutes. What is jasmine spend in miles per hours

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The product of two negative rational numbers is always zero sometimes zero never zero

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.