What is the least common multiple for the numbers 4 and 5

Bruce is getting materials for a chemistry experiment his teacher gives him a container that has 0.25 liter of liquid in it.bruce need to use 0.4 of this liquid for the experiment. how much liquid will bruce use?

In the rectangle below ac=30 units what is de

Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls