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3 years ago

11

Which rule can you use to find the nth term of an arithmetic sequence in which the common difference is 5 and a12 = 63?

1 answer:

iren2701 [21]3 years ago

4 0

Tn = a + (n-1)d

when n = 12, tn = 63

63 = a + (12-1)*5

a = 63 - 55 =8

tn or an
= 8 + (n-1) 5

= 3 + 5n

Hope this helps

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