1.

In AP T5 = -9 and T9 = 7 find T14?​

Answer»

-step EXPLANATION:T4 = a + 4d = - 9. ......(1)T9= a + 8d= 7. ........(2)by subtract equation (2) from (1) we get , 4d = 16d = 4 now put VALUE of d in equation (1)a + 4(4)= -9a = -16 -9 = -25T 14 = a+ 13D = -25 +13(4) = 27



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