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OpenStudy (chris215):
What is the common ratio of the following sequence? 9, -27, 81, -243
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OpenStudy (jdoe0001):
"common ratio" means, is a "geometric" sequence so it means to get the "next term", you multiply the current term by some "value" to get that "value", just divide the "next term" by the "current term" and the quotient will be that "value"
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