2x+3y=5x-y2x+3y=5x−y2, x, plus, 3, y, equals, 5, x, minus, y Complete the missing value in the solution to the equation. ((left parenthesis ,0),0)comma, 0, right parenthesis

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

How do you use the elimination method for this question? explain, because i really want to understand!

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?