sahajs0623 sahajs0623
  • 24-05-2021
  • Mathematics
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Calculate the sum of the first 50 terms in the sequence. 18, 21, 24, 27,

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Аноним Аноним
  • 24-05-2021

Answer:

[tex]sum = \frac{n}{2} (2a + (n - 1)d) \\ = \frac{50}{2} ((2 \times 18) + (50 - 1) \times 3) \\ = 25(36 + 147) \\ = 25 \times 183 \\ sum = 4575[/tex]

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