Question

50,60,72 find the 8th term airthmetic and geometric sequence

Answer 1

8th term is 179.15904

Explanation:

The sequence is geometric with a common ration = 6/5

r = 60/50 = 72/60 = 6/5

Use the formula

`a_(n) = ar^(n - 1)`

In your case a = 50, r = 6/5 and n = 8

`a_(8) = 50(6/5)^(8 - 1) \\ = 50(6/5)^(7) \\ = 50(279936/78125)\\ = 179.15904`