Add the polynomials 5x - 2 + y and -3y + 5x + 2
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Answer:
5.9
Step-by-step explanation:
The mean means arithmetic average (some people just say average here).
The average of 4 numbers is the sum of those 4 numbers divided by the number of numbers which is 4 in this case.
So we have this formula:
Multiply both sides by 4:
Simplify:
Subtract 13.3 on both sides:
Simplify: