Question

Show that tn for the AP 13,18,23,28 is 5n t8

Answer 1

Answer:

$5n + 8$

Step-by-step explanation:

$ap \: \: 13 \: \: 18 \: \: 23 \: \: 23 \: \: 28 \: \: \\ \\ a \: = \: 13 \: \: \: \: \: \: \: \: \: \: \: d \: \: = \: \: 18 - 13 \: = \: 5 \\ \\ n \: th \: \: term \: \: = \: \: a \: + \: (n - 1)d \\ = 13 \: + \: (n - 1)5 \\ = 13 + 5n - 5 \\ = 5n + 8$