Which equation could be used to solve this problem? A number n is 8 less than the sum of 20 and 12. Find the number.
1 answer:
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The mean of a dataset is simply the sum of the elements, divided by how many elements you have.
In your case, you have a dataset of 10 elements, so we will divide by 10.
The sum of the elements is
Which implies that the average is
Which should be approximated to 8.