SOLUTION: Find the nth term of the geometric sequence. −5, 20, −80,

Algebra ->  Sequences-and-series -> SOLUTION: Find the nth term of the geometric sequence. −5, 20, −80,       Log On


   

Question 1178889: Find the nth term of the geometric sequence.
−5, 20, −80,
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Common ratio is -4.

Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.

You better learn the subject from these introductory lessons on geometric progressions
    - Geometric progressions
    - The proofs of the formulas for geometric progressions
    - Problems on geometric progressions
    - Word problems on geometric progressions
in this site.

Also,  you have this free of charge online textbook in ALGEBRA-II in this site
    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic
"Geometric progressions".

Save the link to this textbook together with its description

Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson

into your archive and use when it is needed.