Find the expression that represents the length of the hypotenuse of a right triangle whose legs measure 2x^2 -y^2 and 2xy

Solve -.016x= -16. need solving this

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.

I’m really confused and need your assist me with this question i’ve never been taught