Respuesta :

This will take roughly 3 minutes,

First i'm assuming this is an arithmetic sequence since using the recurring formula;

156250=781250+d

where d is the common difference

d=-625000

Using the implicit relation we can then say;

u(N)=u⁰+nd

where are looking for u⁷ since our first term is u⁰, second is ....8th is u⁷

u(7)=781250-6250000

u(7)=-5868170

No it's not 10 if this is arithmetic sequence.

If this sequence is geometric then,

r=156250/781250

r=1/5

So we're diving by 5

we can use the implicit relation which states:

u(n)=u⁰r^n

u(7)=781250×1/5^7

u(7)=10

THIS IS A GEOMETRIC SEQUENCE AND THE 8TH TERM IS 10 SO THIS THIS TRUE HURYY