Question

find the 9 th term from the end of the AP 5,9,13........185

Answer 1

Answer:

please mark as brainlist

Answer 2

Given,

Since it is from the end,

$\displaystyle\sf{\longrightarrow First\:Term(a)=185$

$\displaystyle\sf{\longrightarrow Common\:Difference(d)=-4$

$\boxed{\displaystyle\sf{n^{th}term= a+(n-1)d}}$

$\displaystyle\sf{\implies 9^{th}\:term=185+(9-1)(-4)$

$\displaystyle\sf{\implies 9^{th}\:term=185+(8\times -4)$

$\displaystyle\sf{\implies 9^{th}\:term=185-32$

$\displaystyle\sf{\implies 9^{th}\:term=153$

$\boxed{\displaystyle\sf{9^{th}\:term\:from\:the\:end\:of\:the\:AP=153}}$