This is what the graph looks like hope this helps:)
Answer:
30
Step-by-step explanation:
because 3×10 is 30 and so 3 out of 10 is 30
Multiply and add it up and you got ur answer
I may be wrong but I believe that the answer is 8.
If you choose a blue marble first its the probability of 3/12 simplified to 1/3 and then the probability of choosing a red next is 5/11 as you didnt replace the one blue marble
