seqences help!

**Tweety** · Feb 23rd 2009, 09:57 AM

write down the terms indicated in each of these arithmetic series.

$\frac{1}{4} + \frac{7}{8}........;12th, nth$

I worked out what the 12th term is, $7\frac{1}{8}$ using this formulae $a + (n-1)d$

but I am not sure how to work out the nth term? do i use the same formulae?

**ADARSH** · Feb 23rd 2009, 10:00 AM

Originally Posted by Tweety

write down the terms indicated in each of these arithmetic series.

$\frac{1}{4} + \frac{7}{8}........;12th, nth$

I worked out what the 12th term is, $7\frac{1}{8}$ using this formulae $a + (n-1)d$

but I am not sure how to work out the nth term? do i use the same formulae?

yes put 1/4 as "a"
and 5/8 as "d"

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