Question

Which is the sixth sequence: an=1/125 (5n-1)

Answer 1

a1= (which is the first term.)
to find the 2nd term you plug in 2 for (an) in the formula given to you. =-4(2-1)^2 *remember an represents the term u are looking for *
now you start to solve it
-4(2-1)^2
-4 (1)^2
.-4^2
= 16
so your first two terms are 2 and 16 .
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an= -1/125 x 5^(n-1)
= -1/125 x 5^( 7-1)
= -1/125 x 5^6
= -1/125 x 15,625
7th = -125. *answer*

Answer 2

Yea, my teacher said -125 is wrong though?

Answer 3

how