You have a bag of marbles with 10 green marbles and 12 black marbles. What is the probability that you pick a black marble on the first try. Do not replace that marble and pick a green marble on the second try?

6/11 and 10/21

Step-by-step explanation:

A bag of marbles has 10 green marbles and 12 black marbles. The probability of picking a black marble on the first try will be:

Green marbles= 10

Black marbles= 12

Total marbles= 12+10 = 22

Probability of picking a black marble = 12/22 = 6/11

If the marble is not replace, the probability of picking a green marble on the second try will be:

Green marbles= 10

Black marbles= 12-1= 11

Total marbles= 10+11= 21

Probability of picking a green marble= 10/21

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

step-by-step explanation:

first, eliminate the parenthesis:

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second, group like terms:

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4

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2

third, combine like terms:

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3

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4

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→

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1

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2

→

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