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OpenStudy (anonymous):
What is the sum of the arithmetic sequence 174, 168, 162, if there are 31 terms?
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OpenStudy (precal):
do you know what formula to use?
OpenStudy (anonymous):
is it an=a1(r)^2-1
OpenStudy (precal):
no that is a geometric sequence
OpenStudy (anonymous):
well idk its the one with the d right?
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OpenStudy (precal):
|dw:1337214160569:dw|
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