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3 years ago

What is 9/3 equal to?

Mathematics

2 answers:

maria [59]3 years ago

6 0

3 wholes.

If you have a pie and you cut it into 3 equal slices, you have 3/3 because the pie is in 3s but you have the whole thing.

Now imagine buying two more pies and doing the same thing.

You have 9 slices, but only 3 pies.

3 wholes.

UkoKoshka [18]3 years ago

4 0

<u><em>Answer: =3. *The answer should be positive sign.*</em></u>

Step-by-step explanation:

divide by the numbers.

9/3 as a fraction. you had to divide by 3.

9/3=3

3*3=9

Hope this helps!

Thanks!

Have a great day!

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For a given IQ test, an individual is considered a genius if their score falls more than three standard deviations from the mean

ki77a [65]

Answer:

$P(Z>3) = 1-P(Z$

So then the probability that an individual present and IQ higher than 3 deviation from the mean is 0.00135

And if we find the number of individuals that can be considered as genius we got: 0.00135*1500=2.025

And we can say that the answer is a.2

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

2) Solution to the problem

Let X the random variable that represent the IQ scores of a population, and for this case we know the distribution for X is given by:

$X \sim N(\mu=?,\sigma=?)$

We are interested on this probability

$P(X>X+3\mu)$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

And we can find the following probablity:

$P(Z>3) = 1-P(Z$

So then the probability that an individual present and IQ higher than 3 deviation from the mean is 0.00135

And if we find the number of individuals that can be considered as genius we got: 0.00135*1500=2.025

And we can say that the answer is a/2.0

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Answer:

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Step-by-step explanation:

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