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24 June, 00:14

Word Problem

Jeanette is writing the first five terms of an arithmetic sequence. She knows that f (1) is - 27 and the common difference is 5. She believes that the first five terms are - 27, - 32, - 37, - 42 and - 47. Is she correct? Justify your answer using complete sentences and proper grammar.

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  1. 24 June, 00:18
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    Jeanette is not correct. In an arithmetic sequence, to find the next number, you have to add the common difference. If the first number is - 27, to find the next number you have to add 5, making the next number - 22. The pattern of adding 5 would continue making the first 5 terms of the sequence : - 27,-22,-17,-12, - 7.
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