krystynakuhareva krystynakuhareva

03-04-2020
Mathematics

contestada

Find the arithmetic mean An of the given terms. A(n-1)=-8, A(n+1)=-9

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nktselepov nktselepov

03-04-2020

[tex]a_n=\frac{a_{n-1}+a_{n+1}}{2} \\a_n=\frac{-8+(-9)}{2} =-8,5[/tex]

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