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kondor19780726 [428]
3 years ago
14

The first three terms of a sequence are given. Round to the nearest thousandth (if necessary).

Mathematics
2 answers:
Ray Of Light [21]3 years ago
6 0

Hope this help!!!

Have a nice day!!!

Anvisha [2.4K]3 years ago
5 0

Answer:

.082

Step-by-step explanation:

First find the common ratio

Take the second term and divide by the first term

20/50 = 2/5 = .4

Check with the third term divided by the second term

8/20 = .4

The formula for a geometric sequence is

an = a1 (r) ^(n-1)  where a1 is the first term and r is the common ratio

     =50 ( .4) ^ (n-1)

We want to find the 8th term

     = 50 ( .4)^(8-1)

      = 50 ( .4) ^7

      =0.08192

Round to the nearest thousandth

      = .082

   

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