There are 40 entries in the science fair. how many ways can the entries finish in first, second, and third place?

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?

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

Which choice represents the sample space ,s for this event