Question

if the 2nd term of an AP is 13 and the 5th term is 25 , what is its 7th term ?​

Answer 1

Step-by-step explanation:

Hope this helps you.Mark me as BRAINLIEST

Answer 2

given = a2 = 13 ; a5 = 25 ; a7 = ?

a2 = 13

a+d = 13

a = 13 -d........1

a5 = 25

a +4d =25........2

we put the value of a

13-d +4d =25

13 + 3d = 25

3d = 25 -13

3d = 12

a = 12/3

d = 4

now we put the value of d in eq 1

a = 13 -d

13 - 4

9

a7 = a+ 6d

9 + 6(4)

9 + 24

33