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OpenStudy (anonymous):
What is the sum of the arithmetic sequence 152, 138, 124, ..., if there are 24 terms?
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OpenStudy (anonymous):
-18
OpenStudy (anonymous):
nice what formula did you use?
OpenStudy (anonymous):
Sn = 2a1 = (n-1) d Where Sn is sum of N terms A1 is the first term N is the number of terms and D is the common difference
OpenStudy (anonymous):
sorry it shoul be Sn = 2a1 + (n-1) d
OpenStudy (anonymous):
nice thanks for the explaination
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OpenStudy (anonymous):
welcome :)
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