Science & Mathematics - 9 July 2007

2007-07-09 11:08:14 · 3 answers · asked by wu_4533 2 in Mathematics

4x+3y = 2 and 5x-7y = -19

I already know that x=-1 and y=2 but if you know how, please find the answer(in an algebraic equation) to each of the expressions above and explain the processes thoroughly. Serious answers please. Thank you

why do you multiply everything on the first equation by 7 and the second equation by 3?


what do you do and why so to get -43 and 43?

2007-07-09 11:05:57 · 5 answers · asked by curiosium 1 in Mathematics

standing 80 ft away.

Because of sidewise gust of wind 10 ft/s
the ball instead hit Mr. Thatcher's daughter Maggi
2 ft to the right of her father 1.0 second later.

What was initial horizontal velocity of the ball?

2007-07-09 11:05:54 · 2 answers · asked by Alexander 6 in Physics

I want to chat with people about brain-power and other metaphysical abilities and I don't want to have to pay any kind of membership dues. I am not interested in the 'black magic' or spells or any other hocus-pocus, I just want to learn about self-hypnotism, esp, energy transferral, etc

2007-07-09 11:01:04 · 4 answers · asked by mysticrystaldawn 3 in Parapsychology

...and I journeyed with it 65 million light years away and pointed it back at the Earth, could I witness the cataclismic event that sparked the extinction of the dinosaurs? Could I watch the building of the pyramids? The crucifixion of Jesus? etc? I don't care how old I would be, or how I would breathe, or how I go to the bathroom, or any other physical or logistical issue.

2007-07-09 11:00:23 · 9 answers · asked by photonicboom 1 in Physics

2007-07-09 10:59:48 · 12 answers · asked by Anonymous in Earth Sciences & Geology

can someone help me out on this what i need to know is what is the period of the sine curve cos(4x) for x = 0 to 2 pi

i need to know the period in degrees and radians please.

any help gladly appreciated.

Thanks
Eggie

2007-07-09 10:58:38 · 8 answers · asked by l1khs 1 in Mathematics

What is the basic DIFFERENCE, in terms of definition, between the domain and range of functions?

I am looking for simple terms NOT MATH BOOK jargon.

2007-07-09 10:55:32 · 4 answers · asked by Sharkman 1 in Mathematics

We just got a weather radio for hurricanes and such but I can't find out what station is for Charleston (as far as just the weather alert channel). Does anyone else know?

2007-07-09 10:51:53 · 3 answers · asked by HisWife 3 in Weather

2007-07-09 10:48:57 · 8 answers · asked by quanna12 1 in Astronomy & Space

i want to build a hard war that take audio signal from a mic and display the power by colored leds,any suggestion how will i start, the roblem is that how can i get the average power in real time,please help

2007-07-09 10:43:40 · 3 answers · asked by angie 1 in Engineering

In a recent survey in Canada, 78% of men shave with a razor blade, which is 1.5 times the percentage of men in Canada who shave with an electric razor. What is the percentage of men in Canada who shave with an electric razor?

2007-07-09 10:40:25 · 4 answers · asked by Dedra A 1 in Mathematics

the probability that a roulette wheel stops on a red number is 18/37. For each bet on "red, you are returned twice your bet (including your bet) if the wheel stops on the red number, and lose your money if it does not .

if you bet $1 on each of 10 consecutive plays, what is your expected winnings?

2007-07-09 10:29:47 · 4 answers · asked by Anonymous in Mathematics

Or could the PGF process at least condense the amount of waste so existing storage facilities would be able to handle the expected volume of low-grade waste now that nuclear energy may be coming back in vogue.

I've been doing a variety of casual research on Plasma Gas Waste disposal systems in my search for answers about environmental problems. I had a "eureka" moment when I considered the synergy of the PGF and the enormous amount of residual slightly radioactive waste from the Medical & research world. ã

2007-07-09 10:29:41 · 2 answers · asked by Fuggetaboutit_1 5 in Engineering

Let's just say the Earth is moving at 185,999 miles per second, and you shoot a laser in the same direction the Earth is already traveling, at what speed does the light from the laser move away from Earth?

2007-07-09 10:28:05 · 8 answers · asked by photonicboom 1 in Physics

2007-07-09 10:27:02 · 9 answers · asked by l z 3 in Other - Alternative

Please note I am not making this claim.
I found this article today by Paul Cameron
http://www.familyresearchinst.org/FRI_EduPamphlet6.html

This article has a lot of the gay bashing common to sites like this. However the concept of "sexual bums" outlined in the first part of the article is new to me.
Are these people not satisfied with a world population of over six billion?
For same sex parents how do you feel about this article?
For those of us who have not produced children do you feel you have failed to do your part as a productive member of society?

2007-07-09 10:25:37 · 8 answers · asked by Vida 3 in Other - Alternative

I mean, if the cop knows where I am, he can't know how fast I was going, and if he knows how fast I was going he can't know where I am....

2007-07-09 10:21:43 · 2 answers · asked by Anonymous in Physics

like whats going to happen in the fucherin wether

2007-07-09 10:18:35 · 2 answers · asked by kelli g 1 in Earth Sciences & Geology

2007-07-09 10:09:49 · 6 answers · asked by tracyterry 3 in Astronomy & Space

2007-07-09 10:09:12 · 8 answers · asked by Anonymous in Mathematics

2007-07-09 10:08:55 · 8 answers · asked by coolguy_poolguy 1 in Astronomy & Space

Theoratically speaking of course.


According to Einstein, I thought you could only travel forward in time, not backward.


Another question: How fast would one have to travel to time travel?


- 15 y/o freshman


spacebarisbroken. :(

2007-07-09 10:08:47 · 5 answers · asked by Anonymous in Physics

We're wondering what we'll need to do to the pool after this HUGE rainstorm. Thanks guys :)

2007-07-09 10:07:11 · 7 answers · asked by Anonymous in Weather

2007-07-09 10:05:27 · 1 answers · asked by Book of Changes 3 in Mathematics

Does anyone know of a bug lights up and is much larger than a lighting bug (firefly)? It makes a buzzing noise and flies quite fast. Does anyone know this bug? PLEASE HELP!

2007-07-09 10:04:46 · 2 answers · asked by cheer_girl_1234 4 in Zoology

It's a place between Cody and Powell

2007-07-09 10:01:12 · 2 answers · asked by Anonymous in Geography

if any1 is good at math can u explain to me how to go about this problem setp by step and what the final answer is?! Thanks!

2007-07-09 09:51:32 · 8 answers · asked by Anonymous in Mathematics

Im still here asking crazy questions...What exactly are flying Huminoids?? are they aliens wid back packs??? Are there reall such things as USO?

2007-07-09 09:44:59 · 6 answers · asked by Spencer G 2 in Astronomy & Space

find the missing factor

16x^3-54=2(2x-3)(?)

thanks!

2007-07-09 09:44:17 · 5 answers · asked by Anonymous in Mathematics