How many arrangements can be made using 2 letters of the word hyperbolas if no letter is to be used more than once?

What value of x is in the solution set of –5x – 15 > 10 + 20x?

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.

Write the expression 7x^3-28xy^2 as the product of 3 factors