half of Roberts's piece of wire is equal to 2/3 of Maria's wire. The total length of their wires is 10 ft. How much longer is Roberts wire?

Factor the monomial completely 42a3b3

Average acceleration: i have no idea how to do this.

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