Aproportion relationship is represented by the equation 2x=18y. if y=kx, where k is the constant of proportionlaity, then what is the value of k? a.9b.2c.1/2d.1/9

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

Asap! i'm not good math and i'm lost.

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?