Find the difference between the square of 18 and the square of 9

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.

Quickly select all numbers that are prime. 21 / 23 / 11 / 17 / 15

There are six muffins in a package how many packages will be needed to feed 48 people if each person has two muffins