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If the 3rd and the 9th terms of an AP are 4 and -8 respectively,which term of this AP is Zero?

2
by rajnani

i am doing with whole formulae ok??

kk

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by rajnani

i am doing with whole formulae ok??

kk

Log in to add a comment

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

Formula is last term =first term -(n-1)difference

4=a+(2)d equation 1

-8=a+8d equation 2

by solving both we get d=-2

then by substituting that in any of the equation we get the first term as 8

therefore the term which is 0 is 5th term

4=a+(2)d equation 1

-8=a+8d equation 2

by solving both we get d=-2

then by substituting that in any of the equation we get the first term as 8

therefore the term which is 0 is 5th term

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.