Suppose you choose a marble from a bag containing 2 red marbles, 5 white marbles, and 3 blue marbles. You return the first marble to the bag and then choose again. Find P (red and blue) A.) 3/50

B.) 7/10

C.) 3/5

D.) 1/2

John bought 2 horses at rs 20000 each

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.

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a. p.