The first term of an arithmetic series is 4. The sum to 20 terms is 15. Find,

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The first term of an arithmetic series is 4. The sum to 20 terms is −15. Find, in any order, the common difference and the 20th term.

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Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

ISBN: 9781292183404

1st Edition

Authors: Greg Attwood, Jack Barraclough, Ian Bettison, David Goldberg, Alistair Macpherson, Joe Petran

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Question Posted: Aug 08, 2023 07:58 AM

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The first term of an arithmetic series is 4. The sum to 20 terms is 15. Find,

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Lets denote the first term of the arithmetic series as a the common difference as d a...View the full answer

Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

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