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Answers • Maths • Secondary

MATHS

Asked by Faye

What is the 4th and 10th term for 4n-5? We got -1, 3, 7, 15 ...35- 35 correct but all others show incorrect. Please help 😊?

To work out a term, replace the n with the position in the sequence, e.g. The 1st term is (4 x 1) - 5 which is - 1. The 4th term... Replace the 1 with a 4 so you have (4 x 4) - 5. Another way to check your answer in these questions is to look at what the n is multiplied by. In this case we have 4n, so we have a sequence which increases by 4 each time.

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