6tractors take 6 days to collect the harvest. hoe long would it take for 15 tractors to do the same amount of work?

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?

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?