Sarah has aa collection of marbles. she notices that if she borrows 4 marbles from a friend then she can arrange the marbles in rows of 13 each. what is the remainder when she divides her original number of marbles by 13?

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.

Somone me i want to know what 18 hours out of 24 hours in a fraction

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!