the seventeenth term of an AP is -4 and thirteenth term is -16.What is 8th term
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Answer:
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Step-by-step explanation:
a+16d=-4. i
a+12d=-16 ii
a+12d+4d=4
-16+4d=4
4d=20
d=5
put d=5 in ii equation
a+12×5=-16
a+60=-16
a=-16+60
a=44
a+7d = 44+7×5
=44+35
=79
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