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Mathematics 12 Online
OpenStudy (anonymous):

i'll give a medal or whatever if you help A bag contains 8 blue marbles, 6 green marbles, 12 yellow marbles, and 10 orange marbles. A marble is to be drawn from the bag without looking. What is the probability that the marble drawn will not be blue? a.2/9 b.3/4 c.7/9 d.7/8

OpenStudy (mertsj):

How many marbles in the bag?

OpenStudy (anonymous):

36

OpenStudy (mertsj):

How many of them are NOT blue?

OpenStudy (anonymous):

28

OpenStudy (mertsj):

Then what is the probability that the marble you draw will not be blue?

OpenStudy (anonymous):

D? .-. im not good at math at all

OpenStudy (mertsj):

You don't have to be good at math to figure this out. If you have 5 coins in your pocket: 1 nickel, 2 dimes, 2 pennies what is the chance you'll draw out a dime?

OpenStudy (mertsj):

2 chances out of 5: 2/5 would you agree?

OpenStudy (anonymous):

yeah ...

OpenStudy (anonymous):

so if I simplify it wouldn't I get 3/4?

OpenStudy (mertsj):

What are you simplifying to get 3/4?

OpenStudy (anonymous):

8/36

OpenStudy (anonymous):

oh wait nvm

OpenStudy (anonymous):

8/28

OpenStudy (mertsj):

I thought there were 28 not blue marbles

OpenStudy (mertsj):

Let's go over this again. There are 36 marbles in the bag. 28 are not blue. The chance of getting a marble that is not blue is 28/36

OpenStudy (anonymous):

so it is 3/4 divide the numbers by 8 and its 3/4

OpenStudy (mertsj):

28/36=7/9

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