nadeLest6in4Delond nadeLest6in4Delond

02-08-2016
Mathematics

contestada

what is the 8th term of the geometric sequence 4, −20, 100, …?

Respuesta :

Ckaranja Ckaranja

06-08-2016

First term a= 4,
Common ratio, r=-20/4=-5
nth term =[tex] ar^{n-1} [/tex]
The 8th term is thus;
4[tex] -5^{8-1} [/tex]
=4*(-78125)
=-312500

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