May 30, 2016

Homework Help: math

Posted by edwin on Wednesday, May 21, 2014 at 12:06pm.

The 3rd term in an arithmetic sequence is 12, the 7th term is 24,

a) How many common differences are there between a_3 and a_7?

b) What is the common difference of the sequence?

c) What is the first term in the sequence? a_1

d) What is the expression for this arithmetic sequence?

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