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OpenStudy (anonymous):
HELP PLEASE, WILL REWARD! What is the sum of the finite arithmetic series? (-10)+0+10+20+...+130
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OpenStudy (anonymous):
The sum? It raises by 10 each time.. Can you explain the problem a little better? O:
OpenStudy (anonymous):
I have no other way, that's the exact question i have.
hartnn (hartnn):
can you find the common difference of this arithmetic series ?
OpenStudy (anonymous):
Okay, well the common difference (d) is positive 10. The arithmetic series will be (a+10) (a+2(10)) etc.
OpenStudy (anonymous):
The answer choices are 900 1,000 950 955
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