write an equation in standard form of an ellipse that has a vertex at (-6, 0), a co-vertex at (0,5), and a center at the origin?

The area of a rectangle is 54x^9y^8 square yards.if the length of the rectangle is 6x^3y^4 yards,which expression represents the width of the rectangle in yards

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.