M2th913 M2th913

16-01-2018
Mathematics

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Indentify the common ratio of the following sequence 5,-15,45

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16-01-2018

The Answer is 1:-3:9

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highwireact highwireact

16-01-2018

-3

We obtain the common ratio for a sequence by dividing one term by the one before it. If there’s a common ratio, all of the quotients should be the same. In this case:

-15/3 = 45/-15 = -3

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