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The cards below have a mean of 25. What is the missing number?: ? 19, 22, 31

Sagot :

Saylorjomariahcurdidn

Answer: Its 28.

Step-by-step explanation:

MrRoyalidn

The missing number in the card s 28

How to determine the missing number?

Represent the missing number with x.

So, we have:

x, 19, 22 and 31

The mean of a dataset is:

Mean = Sum/Count

So, we have:

25 = (x + 19 + 22 + 31)/4

Multiply both sides by 4

100 = x + 19 + 22 + 31

Evaluate the sum

100 = x + 72

Subtract 72 from both sides

x = 28

Hence, the missing number is 28

Read more about mean at:

https://brainly.com/question/14532771

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