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Krizelnunesgo
Answered

Calculate the sum of the terms in an arithmetic sequence 9, 16, 23, 30,37,44,51,58,65,72
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Sagot :

Answer:

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Answer:

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Step-by-step explanation:

number of terms=10

common difference= 7

s10=10/2(9+72)

s10=5(81)

s10=405

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