How much nylon (in square feet) would be needed to make the tent shown, including the bottom? 12ft, 10ft, and6ft

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)