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Tju [1.3M]
3 years ago
15

If 15 is added to a number the result is 56 less than twice the number

Mathematics
1 answer:
mart [117]3 years ago
3 0
Let, the number = x
It would be: x + 15 = 2x - 56
2x - x = 15 + 56
x = 71

In short, Your Answer would be 71

Hope this helps!
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A set of data items is normally distributed with a mean of 240 and a standard deviation of 32. Convert 272 to a? z-score
dem82 [27]

Answer:

z-score = 1

Step-by-step explanation:

Given

Mean= μ=240

SD= σ=32

In order to find the z-score of a value, the mean is subtracted from the value and then divided by standard deviation.

The formula for z-score is:

z-score=(x-μ)/σ

Here x is the value whose z-score is to be found.

In the given question, x = 272

So,

z-score=(272-240)/32

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So , the z-score for 272 is 1..

7 0
3 years ago
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Sergio039 [100]

Answer:

Option D

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The correct option should be Option D.

Hope this helps you.

7 0
3 years ago
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Answer:

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