Question

find the sum of (–7)+(–7)+(–7)+(–7)+......if the number of terms is 30 it's from integers chapter plz... explain it fully​

Answer 1

Answer:

-7x30=-210

Step-by-step explanation:

-7+(-7)+(-7).............=-7x30=-210

Answer 2

Answer:

-210

Step-by-step explanation:

use sn=n/2(2a+(n-1)d)

n=30 a=-7 d=0

simplyfy

sn=-210