Find the solutions to the linear equations represented by the models shown, where circles and squares are shown evenly balanced on balance beams. assume the weight of a circle is 1 unit and the weight of a square is x units. plzzz

Pls brainliest will be awarded if answer is correct

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry. how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.