Cual es la factorización prima de 30

Write the rational number in lowest terms 99/-15

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab