Answer:
Sorry :( I would help but I'm not very good at this type of math =c
Step-by-step explanation:
I hope someone will see this :D
It will be 5 out of 9 times you will pull a red marble
Answer:

Step-by-step explanation:
We are going to use the identity
because this identities right hand side matches your expression where
and
.
So we have that
is equal to
.