I need to find the sum of a 24–term arithmetic sequence where the first term is 12 and the last term is 219

Joyce Sharp

Joyce Sharp

Answered question

2022-09-24

I need to find the sum of a 24–term arithmetic sequence where the first term is 12 and the last term is 219

Answer & Explanation

Elias Keller

Elias Keller

Beginner2022-09-25Added 11 answers

Formula for Sum of Arithmetic Sequence:
S n = n 2 ( a 1 + a n )
S 24 = 24 2 ( 12 + 219 )
S 24 = 12 ( 231 )
S 24 = 2772

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