Ajar contains 10 red marbles and 20 blue marbles. if one red marble is selected and then placed back into the jar, what is the probability of the next marble being a blue marble?

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?

10% of 1,900,000. show me how you got the answer

If you could answer these your a life saver