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3 years ago

14

you have a jar of marbles. There are 15 red, 20 blue,7 green, and 18 red marbles. You choose one at random then replace it and c

hoose another. What is the probability of both being blue?

2 answers:

morpeh [17]3 years ago

6 0

The probability of blue is 20/60
2 blue would be (20/60)(20/60) which is .1111

vovangra [49]3 years ago

3 0

1 out of 3 chance.
20 out of 60 marbles are blue.
20/60 = 1/3

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Answer:

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Step-by-step explanation:

Given:

Stanley has a collection of seashells. He found 35% of his collection on Florida beaches.

Stanley has 49 seashells from Florida.

Now, to find the number of seashells of his collection altogether.

Let the number of seashells all together be $x.$

Percentage of seashells found on Florida beaches = 35%.

Number of seashells found on Florida beaches = 49.

Now, to get the number of seashells altogether we put an equation:

$35\%\ of\ x=49.$

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⇒ $0.35\times x=49$

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Dividing both sides by 0.35 we get:

⇒ $x=140.$

Therefore, the number of seashells he have in his collection all together is 140.

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Step-by-step explanation:

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