bm42400
bm42400 bm42400
  • 22-01-2019
  • Mathematics
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Sigma notation and the nth term

Sigma notation and the nth term class=

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akephd
akephd akephd
  • 22-01-2019
The answer is c. If you substitute k=1, 2, 3 and 4 into 2x5^k, you get 10+50+250+1250.
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