Divide. Write your answer in simplest form.
6.4 divided by (-3.2)

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square