Rewrite as difference of squares (2x+5)(2x-5)

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.

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180