SOLUTION: Given the arithmetic sequence 8, 5, 2... find S20.

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Question 1082154: Given the arithmetic sequence 8, 5, 2... find S20.
Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
.
On arithmetic sequences, read introductory lessons
    - Arithmetic progressions
    - The proofs of the formulas for arithmetic progressions
    - Problems on arithmetic progressions
    - Word problems on arithmetic progressions
in this site.

In this way, you will gain/will learn the necessary knowledge and will be able to solve this ABSOLUTELY STANDARD task on your own.


Also,  you have this free of charge online textbook in ALGEBRA-II in this site
    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic "Arithmetic progressions".