Science & Mathematics - 23 September 2006

I'm just curious...

2006-09-23 07:24:05 · 21 answers · asked by Anonymous in Biology

1.)
-2x+5y=-2
x - 3y=3

2.) a bookstore took in $ 167 on the sale of 5 copies of a new cookbook and 3 copies of a new novel. The next day it took in $ 89 of 3 copies of the cookbook and 1 copy of the novel. what was the price of each book?

for 1.) i got (27,8)
for 2.) i got cookbook= 25 and novel= 14

please check my answers for this quiz

2006-09-23 07:23:28 · 3 answers · asked by Hello!!!! 3 in Mathematics

2006-09-23 07:22:05 · 17 answers · asked by Kat W 2 in Astronomy & Space

i just want to know about that kind of stuff

2006-09-23 07:21:21 · 14 answers · asked by Anonymous in Weather

if you could ask a question with a solution to one of the world's problems what would it be and why?--do you have a better solution than SH?---forget about your stances on issues and come up with solutions--------its you and SH and its your chance to make a difference. *ATTENTION STEPHEN HAWKING too*

2006-09-23 07:21:19 · 2 answers · asked by Anonymous in Other - Science

i need to review my calculus. can anyone show me how to get the answer, not just the answer but the steps please.
thx

2006-09-23 07:20:08 · 6 answers · asked by speeds3mu 1 in Mathematics

2006-09-23 07:16:19 · 6 answers · asked by Dan N 1 in Mathematics

I need the inductance value of a 40Wbulb

2006-09-23 07:15:23 · 8 answers · asked by Anonymous in Physics

Please dont use long words, it them im not comfartable with. I have a homework assignment on chemical change and its due on Monday and the internet cant help me. Thank you if you help!

2006-09-23 07:11:15 · 6 answers · asked by me!! 2 in Chemistry

2006-09-23 07:03:44 · 7 answers · asked by wqwqwswe 1 in Mathematics

2006-09-23 07:01:37 · 13 answers · asked by sarvleen 1 in Mathematics

2006-09-23 07:01:06 · 7 answers · asked by Sweetlysour 1 in Other - Science

2006-09-23 07:01:03 · 15 answers · asked by jas 2 in Astronomy & Space

It really would be wonderful to have electricity available to any consumer of electricity without wires running alllllll the place, thus saving on transmission losses also!

2006-09-23 06:57:43 · 10 answers · asked by varun s 1 in Physics

what would you hypothesis be and what factors might influence your chioce? and does a drink that quenches your thirst always rehydrate you?

2006-09-23 06:57:14 · 12 answers · asked by Banana Peels... 2 in Biology

Please tell me how you came up with the amount.

2006-09-23 06:55:09 · 7 answers · asked by Bob 3 in Mathematics

2006-09-23 06:55:03 · 5 answers · asked by minimefancyface 1 in Zoology

odor of garlic. Do broken magnets normally smell like garlic? I don't get it. Was I just hallucinating?

2006-09-23 06:54:31 · 2 answers · asked by Anonymous in Chemistry

A curve of radius 60 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely make the curve?

I am not sure how to solve this without knowing the mass of the car. Apparently it can be done but I am not seeing it in my book. In every equation I either have to have the mass or have known the mass of the car in order to calculate this.

Can I work backwards from calculating the banking angle?

Any ideas...?

2006-09-23 06:51:28 · 2 answers · asked by Anonymous in Physics

2006-09-23 06:49:59 · 2 answers · asked by skiagi2k 1 in Zoology

2006-09-23 06:48:23 · 16 answers · asked by sarvleen 1 in Mathematics

2006-09-23 06:46:56 · 7 answers · asked by sarvleen 1 in Mathematics

2.014×10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 79.8 s.
Under identical conditions, 1.960×10-4 mol of argon gas takes 89.5 s to effuse.
What is the molar mass of the unidentified substance (in g/mol)?

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HELP plz!!

2006-09-23 06:43:20 · 1 answers · asked by poppa 1 in Chemistry

2006-09-23 06:41:37 · 4 answers · asked by Christine L 1 in Other - Science

the answer is false. but i don't know why. can anyone explain?

2006-09-23 06:41:18 · 8 answers · asked by Anonymous in Physics

2006-09-23 06:40:52 · 8 answers · asked by luckandlove4 1 in Biology

2006-09-23 06:37:57 · 4 answers · asked by raya2684 1 in Other - Science

he will differ of a normal guy in seeing

2006-09-23 06:37:57 · 12 answers · asked by Anonymous in Medicine

2006-09-23 06:36:26 · 4 answers · asked by Jayu P 1 in Physics

2006-09-23 06:36:22 · 12 answers · asked by MisSMurd3r 1 in Mathematics