Given ( 12 -13 17 -22) (x y)= (7 -51), what is |A y|?

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 value of x in the diagram below?

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?