heeeeeey89 heeeeeey89
  • 22-09-2020
  • Mathematics
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what is the sum of this arithmetic series?

what is the sum of this arithmetic series class=

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LivyRoss
LivyRoss LivyRoss
  • 22-09-2020
The sum of this arithmetic series is 52.
Answer Link
jimrgrant1 jimrgrant1
  • 22-09-2020

Answer:

52

Step-by-step explanation:

The ' easiest' method here is to substitute k = 1, 2, 3, 4 into the expression and sum the terms, that is

(- 2 + 6(1) ) + ( - 2 + 6(2) ) + ( - 2 + 6(3) ) + (- 2 + 6(4) )

= (- 2 + 6) + (- 2 + 12) + (- 2 + 18) + (- 2 + 24)

= 4 + 10 + 16 + 22

52

Answer Link

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