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Readme [11.4K]
3 years ago
15

a positive number of two digits the ten place exced.the unit place digit by 5 .if the producted digit is 46. find the number​

Mathematics
1 answer:
Leokris [45]3 years ago
6 0

I uploaded the answer to a file hosting. Here's link:

tinyurl.com/wpazsebu

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Step-by-step explanation:

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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
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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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3 years ago
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Answer:

Step-by-step explanation:

16n^2-25=0

16n^2=25

n^2=25/16

n=+-5/4

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John is 12 years older than Miles. Five years ago, John was two times as old as Miles was back then. How old are John and Miles
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Answer:

John is 29, Myles is 17.

Step-by-step explanation:

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