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OpenStudy (anonymous):
What is the common ratio of the following sequence? 9, -27, 81, -243
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OpenStudy (anonymous):
-3
OpenStudy (angela210793):
@Nick_Black i think u must explain to Alexzndrac how u got -3
OpenStudy (anonymous):
right
OpenStudy (anonymous):
well there is a formula of it i.e is T=ar^(n-1) a= first term r=common ration and n= no. of times T= term
OpenStudy (anonymous):
\[t=ar ^{n-1}\]
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OpenStudy (anonymous):
got it???
OpenStudy (anonymous):
yes thank you
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