Question

HELP!!!!!!!!!!!!!!!!!!!!!!!!!! EXPLAIN TOO PLZ!

Answer 1

Answer:B)
`(14)/(95)`

Explanation:

Step 1: list down the probability of the marbles,

you will get the probability

of
`(3)/(5)` for the blue marbles and
`(2)/(5)` for the red ones .

Step 2: Forget about the blue marbles and focus on the red marbles

On the first pick of marbles the probability of getting a red marble is
`(2)/(5)` but then you didn't replace the marble so now you have only 19 marbles as your total.

Step 3: lets say you picked a red marble on the first pick now you only have 7 red marbles out of 19 marbles (minus the red marble you picked -> step 2)

so the probability of getting a red marble on the second pick is
`(7)/(19)`

Step 4: multiply the probabilities of both the first and second pick

it will look like this

`(2)/(5)` ×
`(7)/(19)`

^ ^

first pick second pick

Note : You will only minus your probability and number of "marbles "( in this case ) if the question says "without replacing "

final answer :
`(14)/(95)`

Answer 2

Ok so you would just take the two fractions and simply if needed and that the answer!