tykinas12 tykinas12
  • 25-02-2021
  • Mathematics
contestada

Find the sum of the arithmetic sequence. 15,17,19,21,...,33

Respuesta :

strawberry6282
strawberry6282 strawberry6282
  • 25-02-2021

Answer:

as formula says:

sum =

in our case n = 10, a1 = 15 and An = 33 so the answer will be:

sum = 10 * (33 + 15)/2 = 10 * 48 / 2 = 10 * 24 = 240

Step-by-step explanation:

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