Leilani is 1.6m in height. Serenity is 1.55cm and Kaylee is the same height as Serenity. Find their average height havent done this in years :(

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

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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.