They are nine red and six Green marbles in a bag Reach in the bag and randomly takes out one mobile what is the probability of the child get an a green marble

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.