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victus00 [196]
3 years ago
7

The first term of a geometric series is 124. The sum to infinity is 64 . Find the common ratio​

Mathematics
1 answer:
zalisa [80]3 years ago
7 0

9514 1404 393

Answer:

  -15/16  

Step-by-step explanation:

The sum of a geometric series with first term a1 is ...

  S = a1/(1 -r)

Then the common ratio (r) is ...

  r = 1 -a1/S

For the given values, the ratio is ...

  r = 1 - 124/64 = -15/16

The common ratio is -15/16.

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