Which expression is equivalent to 7√x^2/ 5√y^3 ? assume y ≠ 0?

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.