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PilotLPTM [1.2K]
3 years ago
7

The ratio of boys to girls in the 6th grade is 2:3 . if there are 24 boys,how many girls are there ?

Mathematics
2 answers:
11Alexandr11 [23.1K]3 years ago
5 0

Answer:

36

Step-by-step explanation:

24/2 and then that times 3

scoundrel [369]3 years ago
5 0

Answer: 36 girls


Step-by-step explanation:

In a ratio, if possible, simplify first. Once the ratio is simplified you can multiply both numbers by the same number and the ratio will remain a ratio (which can be simplified). In this case, we can divide 24 by 2, because there are 24 boys in a ratio of 2 boys to 3 girls. The result is 12, and when we multiply 12 by 3 (the ratio for girls) we get 36. Therefore, the answer is 36 girls.

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Which of the pairs of events below is mutually exclusive?
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Step-by-step explanation:

Given four pair of events:

1. Drawing an ace of spades and then drawing another ace of spades without replacement from a standard deck of cards

2. Drawing a 2 and drawing a 4 with replacement from a standard deck of cards

3. Drawing a heart and then drawing a spade without replacement from a standard deck of cards

4. Drawing a jack and then drawing a 7 without replacement from a standard deck of cards

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Which of the pairs is mutually exclusive?

Solution:

First of all, let us have a look at the definition of mutually exclusive events.

Mutually exclusive events do not have any case in common.

In other words, two events are known as mutually exclusive when both the events can not occur at the same time.

Now, let us have a look at the given options one by one:

1. Drawing an ace of spades and then drawing another ace of spades without replacement from a standard deck of cards.

We know that there is only one ace of spades in a standard deck.

Therefore, the two events can not occur one after the other, so these are mutually exclusive events.

2. Drawing a 2 and drawing a 4 with replacement from a standard deck of cards.

The two events can occur one after the other, so these are not mutually exclusive.

3. Drawing a heart and then drawing a spade without replacement from a standard deck of cards.

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4. Drawing a jack and then drawing a 7 without replacement from a standard deck of cards.

Separate cards are drawn one after the other, so not mutually exclusive.

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Answer:

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Step-by-step explanation:

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