Science & Mathematics - 2 September 2007

Do starcharts,planitariums,moonmaps that sort of thing need updating sometimes or do they never really change so i dont have to buy new ones?

2007-09-02 07:42:40 · 7 answers · asked by super_man 3 in Astronomy & Space

Find all differentiable functions with positive domain and value for which a positive "a" can be found such that :

f'(a/x)=x/f(x)

{" f' " is the derivative of "f"}

Thanks

2007-09-02 07:41:29 · 4 answers · asked by Amir 1 in Mathematics

2007-09-02 07:32:39 · 3 answers · asked by eh 1 in Mathematics

Two folks decided they are right for each other, the third wanna be was left out. Isn't it wrong for the one who didn't make it to take it out on the ones who did by causing them all kinds of trouble within family, friends, society, workplace, etc. anyway he can? What does it say of this kind of individual? Isn't it right that he got left behind on the way side? Should he be looking for someone more like himself instead ? Should we fear him and try and include him in our circle just to keep him in good humor or ignore and move on and tread carefully?

2007-09-02 07:31:38 · 4 answers · asked by hateevilstalkers 1 in Mathematics

I have a wter tank in my house.It is already controled by digital level controler(with three iron rods dip in water) but i want to use infrared sensor to sense the water level & dismiss iron rods.

2007-09-02 07:30:31 · 6 answers · asked by Anonymous in Other - Science

please can someone take me step by step to a solution to the following equation using the "Completing the square" method:

8x^2 - 5x - 3 = 0

2007-09-02 07:29:41 · 6 answers · asked by Anonymous in Mathematics

Can you please answer and explain how you got the answer. Thanks, my professor isn't explaining herself very well. Thanks again, I really appreciate it.

Evaluate if x=-4

(6x)^0=
6x^0=

Evaluate if x=4

(6x)^0=
6x^0=

2007-09-02 07:27:39 · 3 answers · asked by FMR13B 1 in Mathematics

calculate the limit

2007-09-02 07:26:46 · 6 answers · asked by Deutschjoe 3 in Mathematics

2007-09-02 07:25:32 · 1 answers · asked by Anonymous in Zoology

Estimate the result in the following division problem. (Remember to round divisors to the nearest ten and dividends to the nearest hundred.)

612 divided by 32

2007-09-02 07:21:21 · 7 answers · asked by mae 1 in Mathematics

2007-09-02 07:20:13 · 7 answers · asked by erik 1 in Physics

God created five elements such as air, earth, fire, water, sky in universe compound chemical relevant to each other. Are we alone in our little blue planet, nor neither no other species in vast universe for no means.

2007-09-02 07:18:03 · 7 answers · asked by KVS 1 in Astronomy & Space

i want to become a nurse who takes care of the newborn babies in the hospital, is there a specific name for that?

2007-09-02 07:17:13 · 4 answers · asked by Anonymous in Medicine

I don't understand the question, actually. When they say "the minumum value," are they asking for a value of f(x)? So the answer would be 1^1 = 1? or 0.5^0.5 = 0.707? I'm confused.

2007-09-02 07:12:35 · 6 answers · asked by abc123 1 in Mathematics

"There are distinct integers m and n such that 1/m + 1/n is an integer."

The only thing I can think of is the values of m and n are +1 and/or -1 for the sum of these fractions to give an integer. Other than that I am lost formulating the proof.

Thanks much for your help!

2007-09-02 07:11:29 · 3 answers · asked by canv74 2 in Mathematics

I have some problems with bees "NOW" I've been Stun too many times now , in the next week i need to get Rid of them any 1 have any ideas?
theres some bees circling my apartment for almost 3 weeks now, I have to get rid of them under $20 bux, today i got stun by them 3 times FuC*ing unbelievable normally bees don't just stun people Right? why me :(

2007-09-02 07:09:21 · 3 answers · asked by FagBag :( 3 in Zoology

We recently blew up a small container, and a few feet away there was a small pink light just before the explosion. We videotaped it and found it lasted for less than 1/30th of a second, and now we can't figure out what it is.

2007-09-02 07:07:00 · 1 answers · asked by Anonymous in Physics

2007-09-02 07:06:48 · 5 answers · asked by Anonymous in Astronomy & Space

1.Evaluate: (f(x+h) - f(x))/h and simplify if f(x)= x^2 + 2x

2. Eliminate the parameter and write a rectangular equation for:
x= t^2 +3
y= 2t

2007-09-02 07:06:21 · 3 answers · asked by jehu22293 2 in Mathematics

Checked some earthquake report sites and found that an earthquake had been reported 8 miles SSE of El Cerrito, CA
on SEP 2 2007 10:29:14 PDT 4.7 Magnitude

2007-09-02 07:05:00 · 6 answers · asked by Anonymous in Earth Sciences & Geology

I watched snakes on a plane and they also said something about a gun shot blowing up the plane

2007-09-02 07:04:02 · 4 answers · asked by Da man 2 in Physics

#1.)

Ok. The first one shows an open box with an aerial view. It shows 1 ft as the length of all sides and 6 in. the height. There is no cover. I am asked to find the surface area.

This is what I have, but I am not sure:

Front = 12" x 6" = 72"
Back = (same) 72"
Side= (same) 72"
Side = (same) 72"
Bottom = 12" x 12" = 144"
Sum = 432 in.^2, or 36 ft^2



#2) The next one is a bit more difficult to describe.

There is a shape that looks something like this:



___________
)__________| Height 2 cm
<----3 cm------>

It says that the bottom piece is 3 cm, the height is 2 cm, and then there is a cutout of a half circle there on the left. The base on the right side is a right angle of 90 degrees. I need to find the perimeter.

This is what I have so far:

P = 2(l+w)
P=2(3cm + 17 cm)
P=6cm + 150 cm
P=156 cm

Thanks so much in advance for your help!

2007-09-02 07:02:58 · 4 answers · asked by humble.earthling 2 in Mathematics

I want to learn about the most fascinating aspects of the universe. What do we know about black holes? Is it proven that the universe has no end? How close are we to finding galaxies with plantets like earth? I need a book geared towards a lay person.

2007-09-02 07:02:26 · 9 answers · asked by That girl 2 in Astronomy & Space

Please show your work

2007-09-02 07:02:07 · 4 answers · asked by Anonymous in Mathematics

ok...when I do it by hand I got -6...but on my graphing calculator...I got 2.....so is it -6 or 2??..I'm not sure...Thanks!!

2007-09-02 07:01:36 · 7 answers · asked by lalalala (: 3 in Mathematics

We just had an earthquake in Southern Ca.... it wasn't bad but, can we get a bigger one?

2007-09-02 07:01:13 · 6 answers · asked by Anonymous in Earth Sciences & Geology

I've been taking Metronidazole for the last couple of days. Last night I had a really disturbing dream, and I remember the last time I had to take it (several months ago) I did then, too. Since it's the weekend, I can't call my doctor to find out if I should stop taking it. Last time, I called my doctor (a different one) and the receptionist told me they did not offer medical advice over the phone. Does anyone know if this is normal? Or should I stop taking it? I'm concerned because it says mental or mood changes could be a side effect, and I don't know if that includes disturbing dreams.

2007-09-02 07:00:19 · 2 answers · asked by Anonymous in Medicine

2007-09-02 07:00:18 · 10 answers · asked by Anonymous in Astronomy & Space

Fill in the blank: Each point in the plane can be associated with an ordered pair of numbers called the _________ of the point.

2007-09-02 06:59:01 · 1 answers · asked by ehsbigpapi9 1 in Mathematics

Complete the given table of values. Identify the x-intercepts, vertex, and the axis of symmetry.
(I don't need an explanation of the graph. I know how to do that. it's the rest of it)

1. y = x^2 + 2x - 3
x y
-2 ?
-1 ?
0 ?
1 ?
2 ?

2. y = x^2 + 1
x y
-2 ?
-1 ?
0 ?
1 ?
2 ?

2007-09-02 06:52:32 · 5 answers · asked by casper5 3 in Mathematics