14. What is the simplified form of (5x2 + 11x - 9) - (2x - 3x + 5)?
2 answers:
You might be interested in
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.