Out of a 49 inch piece of ribbon, how many 3.5 inch pieces can sally cut

Use the diagonals to determine whether a parallelogram with vertices u(2,−2), v(9,−2), w(9,−6), and x(2,−6) is a rectangle, rhombus, or square. give all the names that apply.

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Find the values of y: 3y^3(y^2+ 2/3y)=0