2036581 2036581

10-10-2018
Mathematics

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In an arithmetic sequence, find a6 when a1 = 13 and d = 4

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jimrgrant1 jimrgrant1

10-10-2018

[tex]a_{6}[/tex] = 33

the n th term of an arithmetic sequence is

[tex]a_{n}[/tex] = [tex]a_{1}[/tex] + (n - 1 )d, hence

[tex]a_{6}[/tex] = 13 + (5 × 4 ) = 13 + 20 = 33

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