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2 answers:
Answer:
an = 5 + (n-1)7
= 5+7n-7
= 7n-2
Answer:
= 7n - 2
Step-by-step explanation:
The n th term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 5 and d = 12 - 5 = 7, thus
= 5 + 7(n - 1) = 5 + 7n - 7 = 7n - 2
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