greglamontjames greglamontjames
  • 08-09-2017
  • Mathematics
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What is the common ratio of the sequence -2,6,-18,54

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Аноним Аноним
  • 08-09-2017
common ratio, r is found by dividing the next term by the previous term

r = [tex] \frac{6}{-2} [/tex] = -3
you can see this value is true for any consecutive pairs of terms
also, multiply by -3 to get the next term
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