9th term of an AP is-32 and the sum of its 11th and 13th term is-94 .f

1.	9th term of an AP is-32 and the sum of its 11th and 13th term is-94 .find the AP
Answer» Sorry I didn\'t saw the negative sign that\'s why my ap is wrong A=-7. D=-15/8 AP:-8,-3,2,7.... T9=a+8d=-32a=-32-8d-----------(1)T11+T13=a+10d+a+12d=-942a+22d=-94a+11d=-47-32-8d+11d=-473d=-15d=-5now from (1)a=-32+11(-5)=-32-8(-5=-32+40=8so AP is8,3,-2,-7,-12,-17........\xa0\xa0 Let a be the first term and d be the common difference of the AP. Then,Hence, the common difference of the AP is -5.

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