Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

kiara23

what is the sum of a -7 term geometric series if the first term is -6, the last term is -24576 and the common ratio is -4 ?

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. Sp1d3r
    Best Response
    You've already chosen the best response.
    Medals 0

    Well, in a geometric series you are basically multiplying things over and over again. So if your first term is -6 and your common ratio is -4 that basically means that your geometric sequence is{-6,-6*-4,-6*-4*-4,-6*-4*-4*-4,...}. Now, since we know that it's only 7 terms long we can just follow that process until we have 7 terms in the sequence (the last term you will get is -24576). Once you have the sequence you just need to add up all the terms and you'll get the solution.

    • 2 years ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.