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olga_2 [115]
3 years ago
7

what is the probability that a red or green marble will be selected from a bag containing 9 red marbles, 7 green marbles, and 11

yellow marbles if one is selected randomly ? Help
Mathematics
1 answer:
SVEN [57.7K]3 years ago
3 0
P(red) = 9/(9 + 7 + 11) = 9/27 = 1/3
P(green) = 7/27

P(red or green) = 1/3 + 7/27 = 16/27
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Answer:

= 2 \frac{1}{5}

Step-by-step explanation:

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good luck! have a nice day!

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Step-by-step explanation:

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5 0
2 years ago
Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. 5x+7=2y and
Luda [366]

Answer:

The correct option is option B. It has one solution, and it's x=-3

Step-by-step explanation:

We have the following system of equations:

5x+7 = 2y                        (1)

y-9x=23                            (2)

Step 1: Solve for 'y' in equation (2):

y-9x = 23

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Step 2: Substitute in equation (1):

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Step 3: Solve for x:

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