SOLUTION: Given the Arithmetic sequence A1,A2,A3,A4 55, 64, 73, 82 What is the value of A39?

Algebra ->  Sequences-and-series -> SOLUTION: Given the Arithmetic sequence A1,A2,A3,A4 55, 64, 73, 82 What is the value of A39?       Log On


   

Question 982553: Given the Arithmetic sequence A1,A2,A3,A4
55, 64, 73, 82
What is the value of A39?
Found 2 solutions by solver91311, josmiceli:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




John

My calculator said it, I believe it, that settles it

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+A%5Bn%5D+=+55+%2B+%28+n-1+%29%2A9+
where n = 1, 2, 3, . . . etc.
Let +n+=+39+
+A%5B39%5D+=+55+%2B+%28+39-1+%29%2A9+
+A%5B39%5D+=+55+%2B+342+
+A%5B39%5D+=+397+