Question

1.17 Sn=5+3m. then find its nth term and 11 term.​

Answer 1

Step-by-step explanation:

Sn=5+3n

S1=5+3=8 =>a1=8

S2=5+6=11 => a2=11-8=3

d=3-8=-5

nth tern=a+(n-1)d=8+(n-1)(-5)=8-5n+5=13-5n

11th term=13-55=-42

Answer 2

Answer:

correction => Sn= 5+3n

a11 = 3 , an= 3

Step-by-step explanation:

Sn= 5+3n

1st term a1 = 5+3=8

S2 = 5+6= 11

=> a2 = 11-8 = 3

S3 = 5+9= 14

=> a3 = 14-11 = 3

the progression

=> 8,3,3,3,3,3,3...............,3

similarly

a4= 3

a11= 3

an = 3

hope this helps you