andiaz17p8bruy andiaz17p8bruy

06-05-2018
Mathematics

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In the sequence – 40, –33, –26, –19, … determine the 77th term and the sum of the first 90 terms.

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Terri02 Terri02

06-05-2018

The 77th term is 532 because the nth term is 7n-7

7x77=539

539-7=532

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