Question

if an =7+3n, find s10​

Answer 1

Answer:

from given equation

a = 10

d = 3

n = 10

an = a+(n-1)d

an = 10+(n-1)3

an = 10+3n-3

an = 7+3n

a10= 10+(9)3

= 10+27

= 37