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Adam1994
 3 years ago
What is the 9th term of this arithmetic sequence?
2a  b, a, b, .....
Adam1994
 3 years ago
What is the 9th term of this arithmetic sequence? 2a  b, a, b, .....

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TuringTest
 3 years ago
Best ResponseYou've already chosen the best response.1let's find the common difference between each term I guess...

TuringTest
 3 years ago
Best ResponseYou've already chosen the best response.1the common difference is d=a(2ab)=ba so we have up to the third term b 4th term b+(ba)=2ba 5th term 2ba+(ba)=3b2a with the common difference you should be able to figure out what the nth term is. if not, just do it manually ;)
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