Question

If 9th term of an Ap progression is -6 and common difference is 5/4.find the 25th term.?

Answer 1

Answer:

Given that,

a+8d=-6

a+8(5/4)=-6

a+10=-6

a=-16

Now, a25=a+24d

a25=-16+24(5/4)

a25=-16+30

a25=14

Step-by-step explanation:

Hope it helps you frnd....

Answer 2

Answer:   14

Step-by-step explanation:

  9th term of an AP is -6

  so,  Tn = a + [n-1]d = -6

       a + 8d = -6

       a + 8 x 5/4 = -6                             [ d = 5/4 ]

       a + 10 = -6

       a = -16

now, we have a = -16 and d = 5/4

 25th term = a +[25-1]d

                    = [-16] + 24 x 5/4

                    =  14