Let E= {prime numbers less than 30} Work out n(E)

Solve 2x+y=3 x+y=5 in substitution method

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

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.