Question

Find the 57th term of the arithmetic sequence -13, -29, -45, ...−13,−29,−45,...

Answer 1

Explanation:

57th term is -909

by a +(n-1 )d

here a= 13

d= -29- - 13= -16

and n as given is 57...substitute in eqn for nth term by using value of n as 57 and u have 57th term as -909

hope this helps !