75% of what number is 45?

a: 15
b: 30
c: 45
d: 60

Which point is a solution to y s 4x + 5?

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

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39