What is 2 and 3/5 equal to in decimals

What is the answer to |-2x-5|-|-4+8| and x=7

What are the sotions to the quadratic equation 9x^2=4

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