If the legs of a right triangle are given by x2 - y2 and 2xy, then which expression equals the hypotenuse? choose all that apply. x2 y2 (x2 y2)2 (x2 - y2)2 (2xy)2

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Can someone pls ! pls answer all. no explanation needed..

Which system of linear inequalities is represented by the graph? x-3y > 6 and y? 2x + 4 x + 3y > 6 and y? 2x - 4 x - 3y > 6 and y? 2 - 4 x + 3y > 6 and y > 2x + 4 no be 2 -1.1 1 2 3 4 5 submit save and exit next mark this and retum be