Question

The 7th term of
an AP is -4 and it's 13th term is -16.Find it's 20th term
​

Answer 1

Step-by-step explanation:

as per the question I did

a20=46

Answer 2

Answer:

a7= -4 , a13= -16

a20=?

Step-by-step explanation:

a7= a+ 6d

a+6d= -4 --- equation 1

a13= a+ 12d

a+ 12d = -16 --- equation 2

Equation 2and 1 subtract

eq 2- eq 1

d = -2, a= 8

Then a20 = a+ 19d

a20 = 8 + 19( -2)

= 8 - 38

a20 = -30

HOPE IT HELPS YOU DEAR MARK AS BRANLIEST PLZ