A web music store offers two versions of a popular song. The size of the standard version is 2.5 megabytes. The size of the high quality version is 4.4 mb. Yesterday, the high-quality version was downloaded twice as often as the standard version. The total size downloaded for the two versions was 2599 mb. How many downloads of the standard version were there?

Find the power series expantion of f(z)=log(4=3z) at the point z=-1

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.

Which statements are true about additional information for proving that the triangles are congruent check all that apply