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steposvetlana [31]
2 years ago
6

Here are the first four terms of an arithmetic sequence.

Mathematics
2 answers:
ololo11 [35]2 years ago
5 0

Answer:

nth term = 7n - 2

Step-by-step explanation:

a = first term = 5

d = common difference = second term - first term

  = 12 - 5 =7

d = 7

a_{n} = a + (n-1)d

    = 5 + (n -1)7

    = 5 + 7n - 7          {add like terms}

    = 7n - 2

SashulF [63]2 years ago
3 0

Answer:

n_n = n_n-1 + 7

Step-by-step explanation:

All it does is it adds 7 to the previous term

n = n_(previous)+7

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6 0
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