All categories - 13 March 2007

Use the arithmetic sequence of numbers 1, 3, 5, 7, 9,…to find the following:
a) What is d, the difference between any 2 terms?


b) Using the formula for the nth term of an arithmetic sequence, what is 101st term?


c) Using the formula for the sum of an arithmetic sequence, what is the sum of the first 20 terms?



d) Using the formula for the sum of an arithmetic sequence, what is the sum of the first 30 terms?


e) What observation can you make about these sums of this sequence (HINT: It would be beneficial to find a few more sums like the sum of the first 2, then the first 3, etc.)? Express your observations as a general formula in "n."

2007-03-13 01:03:24 · 2 answers · asked by Anonymous in Mathematics

2007-03-13 01:03:24 · 20 answers · asked by Anashuya 6 in Polls & Surveys

is it just part of growing up or should i take her to the docter.

2007-03-13 01:03:19 · 11 answers · asked by lcaddy24 1 in Toddler & Preschooler

Were you adopted ..?? I was & I was blessed to have the Best Parents ....

2007-03-13 01:03:18 · 21 answers · asked by Derby 6 in Polls & Surveys

2007-03-13 01:03:08 · 16 answers · asked by venkatesh b 1 in Men's Health

Men, do you find it attractive, women, do you aspire to be a size zero?

2007-03-13 01:03:06 · 34 answers · asked by Agony Aunt 5 in Polls & Surveys

gold-digger who dances with the stars?

2007-03-13 01:02:54 · 5 answers · asked by Anonymous in Polls & Surveys

2007-03-13 01:02:48 · 7 answers · asked by bhie 1 in Elections

so you can see yourself on the 'question page'?

2007-03-13 01:02:36 · 13 answers · asked by Anonymous in Polls & Surveys

2007-03-13 01:02:36 · 8 answers · asked by Anonymous in Music

after they just have broken up for a month
and he tells you that he never loved your friend and just dated her because he wanted to be near you.

2007-03-13 01:02:26 · 14 answers · asked by mary d 1 in Friends

2007-03-13 01:02:24 · 23 answers · asked by a1000_desert_roses_bloom 1 in Polls & Surveys

2007-03-13 01:02:18 · 5 answers · asked by Anonymous in Singles & Dating

I was invited by a friend to join her friends list on MySpace and I ended up making me one. Now I read all this hacking, phishing, etc going on on MySpace.
Is this a real problem there? Am I putting myself at risk by having one? Seems like a lot have one on there.
I run several protection programs on my computer but just wondered about that.

2007-03-13 01:02:18 · 4 answers · asked by Gypsygrl 5 in Security

2007-03-13 01:02:17 · 4 answers · asked by Naren_RocksU 3 in Military

ive just been told by my dr i could have Endometriosis ive already been told ive got polysistic ovary syndrome how have you coped with having Endometriosis ? and how has it effected your fertilly.

thanks

2007-03-13 01:02:09 · 10 answers · asked by doughnut1002001 5 in Women's Health

provide evidences

2007-03-13 01:02:08 · 1 answers · asked by leo 2 in Biology

that your thoughts are so twisted that they almost sound like a language that you don't know at all?

My thoughts are in Japanese lately:)

2007-03-13 01:02:02 · 9 answers · asked by ♫Pavic♫ 7 in Polls & Surveys

2007-03-13 01:02:00 · 1 answers · asked by ftisinc 1 in Homework Help

Please tell my why you are so sure. Thanks!

2007-03-13 01:01:58 · 5 answers · asked by Theodore 1 in Quotations

2007-03-13 01:01:54 · 10 answers · asked by Sophia 1 in Credit

I installed Nfs carbon today but when i run it, it's crashing to the desktop. don't know why? I have 64mb intel vga card,512mb ram. I don't know why?
Please help me!
Thanks

2007-03-13 01:01:53 · 3 answers · asked by Frans 2 in Video & Online Games

i need help anyone can you summarize it???

2007-03-13 01:01:43 · 2 answers · asked by Carly-Bear 3 in Books & Authors

2007-03-13 01:01:43 · 7 answers · asked by Pat C 1 in United Kingdom

my partner left five years ago i now with my fiance and council tax want 2500 from years previous but wont take my offer im disabled so dont work but my partner does full time but not well paid so they passed to ballifs who wont accept less than 50 month what can i do

2007-03-13 01:01:35 · 7 answers · asked by Anonymous in Credit

2007-03-13 01:01:35 · 4 answers · asked by jessica05 1 in Biology

Then I close the window and appear again and again.. I restart my PC but nothing happens. What the problem I need help! Some com expert pls. THX 10x

2007-03-13 01:01:29 · 5 answers · asked by Anonymous in Software

hey! Just wanted to know if an arranged marriage works better in the long run, as you will need to spend more time discovering each other. But on the flip side you'r marrying a total stranger! how weird is that. Waiting to hear what you guys have to say on this matter- I'm keeping an open mind.

2007-03-13 01:01:28 · 21 answers · asked by filmyguy 1 in Marriage & Divorce

2007-03-13 01:01:21 · 9 answers · asked by Lorenzo de' Medici 1 in Psychology