Question

the 7 th term of an is -4 and it's 13 th is -16. find the Ap​

Answer 1

Answer:

see the attachment

Step-by-step explanation:

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Answer 2

Solution:

⟩ t7 = - 4...(1) & t13 = - 16...(2)

» d = (t13 - t7)/(13 - 7)

» d = -12/6

» d = - 2

Substituting in (1) we get

» a = 8

Therefore, the required A.P. is 8, 6, 4,...