Acookie factory uses 2⁄5 of a bag of flour in each batch of cookies. yesterday, the factory used 4⁄5 of a bag of flour. how many batches did the factory make yesterday?

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).