February 27, 2017

Homework Help: Math

Posted by Sarah on Wednesday, January 9, 2013 at 1:45am.

The sum of the integers from 40 to 60, inclusive, is 1050. what is the sum of the integers from 60 to 80 inclusive?

Please help me find the pattern and how to use it instead of adding 60+61+62+63..... etc.

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