Pliz, pliz i beg you to answer my multiple choice questions..

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

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.