Alana was working out on the treadmill. she worked out for 15 minutes. part of the time she was walking at 3.1 miles per hour. the rest of the time she was jogging at 5.2 miles per hour. during the 15 minutes, she covered exactly 1.09 mile. how much time did she spend walking, and how much time jogging

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.