The sum of two numbers is 16 , and there difference is 8. determine the numbers by solving the following systems of equations, using x and y to represent the unknown numbers. x+y= 16 x_y=8

Me asap! what is the slope of this line? enter your answer in the box.

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

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16