What are all the solutions? 4x^2+9y^2=72 x^2+y^2=5

The surface area (sa) of a cube with a as the length of each of its sides is given by the formula . if the surface area is known, how can you rewrite the formula to find its side?

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?