Question

the 8 th term of an arithmetic sequence is 12 and its 12th term is 8 what is the algebraic expression for the sequence?
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Answer 1

Answer:

8th term = 12 = a + (8-1)d = a + 7d. This is equation 1. 12th term = 8 = a + (12-1)d = a + 11d.

Answer 2

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8th term = 12 

= a + (8-1)d

= a + 7d.

This is equation 1.

 12th term = 8 

= a + (12-1)d

= a + 11d

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