anonymous
  • anonymous
Help please!
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
AkashdeepDeb
  • AkashdeepDeb
WELCOME TO OPEN STUDY!! :D
anonymous
  • anonymous
thanks! :)
anonymous
  • anonymous
anyway, can you help me out? [SERIES] given a2 = 4, S3 = 17; find common ration and a1

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

AkashdeepDeb
  • AkashdeepDeb
Yes that's why I am here! :D This is a geometric progression I suppose right?
anonymous
  • anonymous
yeah :)
AkashdeepDeb
  • AkashdeepDeb
A1 + a2 + a3 = 17 right? a2 = 4 a1 + a3 = 13 a + ar^2 = 13 Getting this?
anonymous
  • anonymous
yeah..
AkashdeepDeb
  • AkashdeepDeb
Solve the Quadratic equation you get after that! ar = a2 = 4 so a = 4/r Get a quadratic equation and then solve
anonymous
  • anonymous
hmm... i think i already did this kind of solution a couple of hours ago, and my and answer didn't seem to be right as i've checked on the calculator XD
anonymous
  • anonymous
so did you get r = 13 +/- sqrt(105) all over 8? :D
AkashdeepDeb
  • AkashdeepDeb
I hate agreeing to it but YES I DID@!! :D
anonymous
  • anonymous
OM... XD
AkashdeepDeb
  • AkashdeepDeb
:') :D
anonymous
  • anonymous
i've done trial and error, and this is what i've got r= 1/4 and a1 = 12. pretty convincing cuz it actually worked XD. too bad i need the solution to merit a point... well, thanks! :)
AkashdeepDeb
  • AkashdeepDeb
:)

Looking for something else?

Not the answer you are looking for? Search for more explanations.