Question

hey.


solve Any 1 of the following

Answer 1

hope it helps and don't forget to leave. a thanks

Answer 2

HEYA MATE, HERE IS UR ANSWER _________________________

1)a=5

d=a2-a
=13-5
=8

an=181
a+(n-1)d=181
5+(n-1)8=181
(n-1)8=181-5
(n-1)8=176
n-1=176/8
n-1=22
n=22+1
n=23

Sn=n/2 (a+an)
=23/2 (5+181)
= 23/2 (186)
= 23×93
=2,139


2) a=101
d=a2-a
= 99-101
=-2

an=47
a+(n-1)d=47
101+ (n-1)×-2=47
(n-1)×-2=47-101
(n-1)×-2=-54
n-1=-54/-2
n-1=27
n=27+1
=28

Sn=n/2 (a+an)
=28/2 (101+47)
= 14×148
=2,072


________☆☆☆HOPE THE ANSWER HELPS YOU ☆☆______☆☆BE BRAINLY ☆☆_____☆☆