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Greeley [361]
3 years ago
7

What is the sum? 3k/k^2+k-7/4K

Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
3 0

Answer:

  \dfrac{k^2+5k}{4k^2}

Step-by-step explanation:

A suitable common denominator is 4k^2. (This eliminates the first and last choices.)

\dfrac{3k}{k^2}+\dfrac{k-7}{4k}=\dfrac{4(3k)}{4(k^2)}+\dfrac{k(k-7)}{k(4k)}\\\\=\dfrac{12k+k^2-7k}{4k^2}=\boxed{\dfrac{k^2+5k}{4k^2}}

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Select all the distribution shapes for which it is most often appropriate to use the mean .
goblinko [34]

The distribution shape that tells us for which it is best to use the mean is the skewed.

<h3>What is the mean?</h3>

This is the term that is used to refer to the average score that exists in a data set.

In the question, these are the reasons why the other options are not correct

When we say Bimodal we are talking about the 2 modes that are in a symmetric distribution. This has nothing to do with the mean

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symmetric has to do with the fact that there are mirror images when the vertical line is drawn in the distribution.

Uniformed shapes tells us that the classes are made up of the same frequency all through.

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Hence we have the answer that the distribution shapes for which it is most often appropriate to use the mean is the skewed.

Read more on the mean here

brainly.com/question/17847237

#SPJ1

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