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Mutliplied two prime numbers to get 400?
The only number that equals 19 is 19 .
The mean or average of the numbers -410 and 400 is -5. It is found by adding the two numbers together and dividing the sum by two.
4600
I will give an example.1) You pretend like the last two digits of the two numbers are not there. In this case you would do 400 plus 300 equals 700. Then move on:90 plus 30 equals 120. 8 plus 7 equals 15. Then add the numbers together.PARTIAL SUMS398 + 437______700120+ 15835