many was pushed on a swing once reaching a maximum height of 4.5 feet. maximum height decreased by 20% for each swing after that. what is the total of his maximum height, to the nearest foot, after six swings

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.