-11
40
2n+1
The nth term is 3n+7 and so the next number will be 22
209 over 143 in its lowest terms is 19/13 or 16/13
The sequence is Un = 19 - 3n so the 20th term is 19 - 3*20 = 19 - 60 = -41
3n+7
13 and 19.
They are 13 and 19
16/19 is in its simplest form.
Josh Hutcherson is 19; as of October 12th 2011(:
The sequence 13, 14, 15, 16, 17, 18, 19, 20 is an arithmetic progression where each term increases by 1. The nth term can be expressed by the formula ( a_n = 12 + n ), where ( n ) is the term number starting from 1. For example, for ( n = 1 ), ( a_1 = 12 + 1 = 13 ), and for ( n = 8 ), ( a_8 = 12 + 8 = 20 ).
They are 13 and 19 which are prime numbers