Science & Mathematics - 12 September 2007

2007-09-12 02:22:05 · 2 answers · asked by Hanna 2 in Other - Science

I need help how to do this quadratic equation. I need step by step information to make sure that I under the problem.

Thanks

2007-09-12 02:11:28 · 10 answers · asked by Anonymous in Mathematics

aren't they difficult to manage since they aren't solid

2007-09-12 02:02:10 · 3 answers · asked by Anonymous in Chemistry

2007-09-12 02:00:05 · 3 answers · asked by maxi 2 in Engineering

what is the main reason for that, y do we get some disorder when any changes takes place in spinal card.

2007-09-12 01:58:48 · 2 answers · asked by dhivvya r 1 in Medicine

What is:
lim x->0+ x^x

That question has been posted on here before but the solution-

x^x = e^(xln(x)) = 1

does not explain how to get to that point. I was wondering if someone could show me the steps. This is what I have so far...
1. y = x^x
2. ln(y) = xln(x)
3. ln (y) = ln(x)/ (1/x)
4. confused

Any ideas? Thanks.

2007-09-12 01:53:22 · 5 answers · asked by zissoudo 1 in Mathematics

1) Does Domino effect exist in the movement of tectonic plates?
2) What is the Highest magnitude ever recorded?
3) Is it true that when seismic activity among the tectonic plates intensifies, it will give birth to a supervolcano or circumstances of an volcanic eruption?

2007-09-12 01:52:16 · 3 answers · asked by Kyle J 6 in Earth Sciences & Geology

I just need a book, but my friend refuses to let me sue it for an hour or two. I need to do this packet so I can get out of the dummy class I am in. It's been 4 years since I had Alg I, I am now in 10th grade. D: These are just literal equations and some other things.

If you know any of these answers, please help me. Please explain work!

V= 1/3hb || For B

V= pir^2h [pi = pie, I can't find the text symble, It's pie times r^2] || For h

M= x(1 + y) || for y

---

Sove the compound Inequalities

-5x < 40 and 4(x - 3) < -8

-3x + 2 > 11 or 5(x - 2) < 0

14 - 3x <_ or 5 - 4x _> 12

1/3x + 2 > 3 and -3x > 12

Absolute Inequalites

|10x + 2| - 18 = -12

|3x + 6| > 15

|5x + 2| < 7

|7 - 6x| <_ -4

|1/3x + 2| - 8 > -3

Thank you so much!

2007-09-12 01:48:17 · 1 answers · asked by April M 1 in Mathematics

a curve has the equation y=2x^3-5x+q, where q is a constant.
(i) if the tangent to the curve at the point where x=1 has y=intercept equal to 7, find the value of q.
(ii) find the equations of the normal to the curve which are parallel to the line x+y+5=0

pls show the steps

2007-09-12 01:48:07 · 3 answers · asked by Anonymous in Mathematics

mx +ny = -11 3mx + 4ny = 30
2mx - 3ny = 8 2mx - 5ny = 20

2007-09-12 01:47:01 · 2 answers · asked by Anonymous in Mathematics

I got -100 .if this is wrong what is the proper procedure for solving

2007-09-12 01:46:44 · 6 answers · asked by Anonymous in Mathematics

2007-09-12 01:42:17 · 2 answers · asked by Racheal G 1 in Chemistry

I need to do a seminar on Vacuum Circuit Breakers.
But, from searching net, i couldn't find muchinfo.
Please provide some info on it... even links about it will be great help.
Thanks in advance...

2007-09-12 01:27:08 · 3 answers · asked by haridravid 2 in Engineering

2007-09-12 01:20:50 · 4 answers · asked by myself s 1 in Chemistry

What is the concentration of HBr?

A- 1.4N
B- 0.72N
C- 3.1N
D- 0.36N

2007-09-12 01:18:42 · 2 answers · asked by .jc 1 in Chemistry

In the past said that it was impossible for People to go to the moon or into outer space, but Neal armstrong proved them wrong. Do you think that its impossible to go back in time? We had a discussion about this in class, so i was just wondering...

2007-09-12 01:17:08 · 18 answers · asked by Anonymous in Astronomy & Space

2007-09-12 01:16:38 · 3 answers · asked by Anonymous in Mathematics

dy/dx = 2/5.sin(2x).e^cos x .y^2 (y>0)

y = 1 when x = 0.

giving the solution in explicit form.

2007-09-12 01:16:12 · 5 answers · asked by Niall R 1 in Mathematics

2007-09-12 01:14:45 · 8 answers · asked by Anonymous in Astronomy & Space

Philippines were just struck by dry spell during july until early august and now I've been hearing that La Nina might soon arrive in the country. Will there be an occurring La Nina episode this year? And what will be it's effect in the pacific and in the atlantic ocean?

2007-09-12 01:14:40 · 3 answers · asked by mock_rocker2046 1 in Weather

what is the mathematics beyond constructing rockets for nasa?

2007-09-12 01:12:50 · 5 answers · asked by andz 1 in Mathematics

f(x^n) -( x^3)f(x)= 2[(x^3) - 1]

2007-09-12 01:11:20 · 3 answers · asked by Anonymous in Mathematics

Imagine you have been selected to be a crewmember on a deep space probe that will be gone for more than 30 years. The crew is small--only four or five people. You can select anyone you want to travel with you.

The scientists expect the probe to return to earth at the end of the journey, and you are healthy enough to survive several decades of space travel.

Who would you choose to make the journey with you?

2007-09-12 01:05:01 · 13 answers · asked by Warren D 7 in Astronomy & Space

2007-09-12 00:59:09 · 2 answers · asked by Akilesh - Internet Undertaker 7 in Mathematics

2007-09-12 00:21:13 · 3 answers · asked by Jhon 1 in Earth Sciences & Geology

at the end of its life a star becomes a red giant and blows up
with a stellar explosion called supernova. But where does it get the energy for this supernova. YOU CAN SEND MAILS TO MY ID IF U HAVE SOME PICTUTES OR SOME VALUABLE INFORMATION.

2007-09-12 00:11:37 · 11 answers · asked by Anonymous in Astronomy & Space

2007-09-12 00:05:43 · 4 answers · asked by mhymhymhymhymhymhymhy 2 in Mathematics

with solutions

2007-09-12 00:02:24 · 11 answers · asked by mhymhymhymhymhymhymhy 2 in Mathematics