Find the value of the sum 219+226+233+⋯+2018. Assume that the terms of the sum form an arithmetic series. Give the exact value as your answer, do not round.

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asked Jul 17, 2022 2.5k views

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Find the value of the sum 219+226+233+⋯+2018.

Assume that the terms of the sum form an arithmetic series.

Give the exact value as your answer, do not round.

Mathematics
high-school

Finduilas asked

by Finduilas

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Answer:

Explanation:

a1=219

d=a2-a1=226-219=7

2018=219+7n-7

1806=7n

n=258

S258=[(219+2018)/2*258

S258=288573.

Tyrease answered Jul 21, 2022

by Tyrease

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