Posted by dillon on Friday, April 13, 2007 at 5:52pm.
a bag contains 33 green marbles and 25 blue marbles. you select a marble at random from the bag. find the theoretical probability of selecting a blue marble. thanks
Pr(blue)= number blue/total marbles

math  10th Grader, Thursday, December 5, 2013 at 9:22pm
First, you would need to add 33+25 because you need to find the total number of marbles that are in the bag.
algebraic expression: 33+25=x
x=58
Next you would need to take the amount of blue marbles and make a fraction over the total amount. The fraction is 25/58. Therefore, the probability of selecting a blue marble is 25/38 
math  8th Grader, Thursday, December 5, 2013 at 9:23pm
First, you would need to add 33+25 because you need to find the total number of marbles that are in the bag.
algebraic expression: 33+25=x
x=58
Next you would need to take the amount of blue marbles and make a fraction over the total amount. The fraction is 25/58. Therefore, the probability of selecting a blue marble is 25/58