Science & Mathematics - 30 December 2006

How do I find all the values on which the graph of the function f(x)= (x^2+1)/x^2 is concave upwards?

2006-12-30 08:05:52 · 3 answers · asked by ... 1 in Mathematics

2006-12-30 08:01:28 · 4 answers · asked by j_dizzle636 1 in Botany

hwo do i find the values of x, that give relative extrema for the function of f(x)= 3x^5-x^3?

2006-12-30 07:59:44 · 5 answers · asked by Sikwitit 1 in Mathematics

I've been hearing in the news that meat is being cloned? is this true?

2006-12-30 07:53:19 · 7 answers · asked by Anonymous in Earth Sciences & Geology

ex: y=4x-1 help

2006-12-30 07:48:43 · 8 answers · asked by dragon57 1 in Mathematics

The Temperature on New Year's Day in Hinterland was given by
T(H)= -A-Bcos(piH/12), where T is the temperature in degrees Fahrenheit and H is the number of hours from midnight (0 < or equal T which is less than 24).

a) The initial temperature at midnight was -15 degrees Fahrenheit, and at noon of New Year's Day was 5 degrees F. Find A and B
b) Find the average temperature for the first ten hours
C) Use the trapezoidal rule with 4 equal subdivisions to estimate the integral of T(H) dH with upper limit 8 and lower limit 6
d) Find an expression for the rate that the temperature is changing with respect to H.

2006-12-30 07:47:40 · 5 answers · asked by dell10314 1 in Mathematics

Perform the indicated operations and write the answer in standard form.

(6-4i)/(3-i)

Give your answer using the form Ai + B.

please answer and explain this

2006-12-30 07:45:07 · 9 answers · asked by yassem1ne 2 in Mathematics

How will they look different than today?

2006-12-30 07:44:57 · 10 answers · asked by martin h 6 in Biology

please help! thanks in advance!

2006-12-30 07:40:29 · 6 answers · asked by Anonymous in Physics

1. Each letter in the folowing multiplication represents a different digit. Find the value of each letter.
A B C D E
_______4
E D C B A

2. I also want to ask how would you:
Sketch the region in the plane consisting of all points (x,y) such that
abs(X) + abs(y) is less than or equal to 1

3. Find the area of the region between the two concentric circles shown in the figure.
The figure shows two concentric circle. The ends of a line tangent to the inner circle touches the outer circle. This line has a length of 2.

2006-12-30 07:37:10 · 4 answers · asked by Rain 2 in Mathematics

2006-12-30 07:36:35 · 4 answers · asked by TchrzPt 4 in Weather

Consider two cylinders of gas identical in all respect except that one contains o2 and the other He. Both hold the same volume of gas at SP and are closed by a movable piston at one end. Both gases are now compressed adiabatically to one-third their original volume. Which gas wil show the greater temperature increase?

a)O2
b)He c)neither; both same increase
d)not enough information...

2006-12-30 07:32:49 · 5 answers · asked by wzerocx 2 in Physics

I've seen the nature shows about how they find remains of past human-like animals....And the proof has shown evidence about us and other organisms evolving.......but how does evolutuion connect to christianity - Like adam and Eve... explain that* please
WHAT DO YOU THINK (and BELEIVE)

2006-12-30 07:32:11 · 16 answers · asked by Upon this rock 3 in Biology

ok i was just watching a movie and at the very end it showed that there was a dead guy on the moon in a space suit
now the question here is if the guy would decompose.
theres no bacteria or air so would he just be well perserved on the moon? and the next person to walk on the moon would just find a dead guy?

if you can help thank you...im just curious!

2006-12-30 07:32:06 · 7 answers · asked by Anonymous in Astronomy & Space

Seems like a silly question but i wonder why it doesn't thunder and ligthening when it snows..only when it rains? Hmmmm..

2006-12-30 07:29:50 · 12 answers · asked by IrishPrincess 1 in Weather

2006-12-30 07:29:48 · 9 answers · asked by Scarface999 2 in Astronomy & Space

I'm building a bridge for Physics I out of #8 spaghetti and Elmer's glue (the only allowed materials). Why was it suggested to me that I dry glued spaghetti with a hairdryer before it dries? What does that do as opposed to just glueing and letting it dry naturally?

2006-12-30 07:23:42 · 4 answers · asked by c90 4 in Physics

how do I find all the open intervals on which the function f(x)= (x^2)/(x^2+4) is decreasing?

2006-12-30 07:22:09 · 3 answers · asked by GHAAD 4 in Mathematics

this is related to robotics with LEGOs and gears. My vehicle is using two 9-Volt motors and I turn by making one motor go forward and the other motor going backwards. PLEASE HELP! anyone who does crap answers will be reported to Yahoo! Thanks in advance!

2006-12-30 07:22:03 · 1 answers · asked by Anonymous in Physics

2006-12-30 07:21:05 · 11 answers · asked by *sumASTRONAUT* 1 in Astronomy & Space

Also, what makes the products form nuclear fission radioactive and how does one know???

2006-12-30 07:20:55 · 5 answers · asked by Sam L 2 in Chemistry

The sum of a series of the first n terms of a series is
(4n +5)2 {The two indicates squared}. Find the nth term of the series....

I though that Un= Sn - S(n-1)... But its not working ... Help!

2006-12-30 07:18:28 · 8 answers · asked by Pichka 2 in Mathematics

please explian.

2006-12-30 07:18:01 · 3 answers · asked by <3pirate 6 in Biology

experiencing severe sustained pain. any advise on treatments and results, in particular acupuncture .

2006-12-30 07:16:13 · 4 answers · asked by maljax34 1 in Medicine

2006-12-30 07:16:11 · 2 answers · asked by Anonymous in Geography

I know it is to complete the sequence of powers, i.e. in binary, or any other base, n^0 has to be one so you can have a ones place. But is that a reasonable explanation for this?

2006-12-30 07:11:04 · 15 answers · asked by Anonymous in Mathematics

2006-12-30 07:08:01 · 8 answers · asked by ulas kiray 1 in Other - Science

2006-12-30 07:05:39 · 2 answers · asked by giggles4evr 1 in Mathematics

Which of the following is an inorganic nutrient that the body needs.

1. lipids

2. proteins

3. vitamins

4. minerals

2006-12-30 07:00:12 · 12 answers · asked by Anonymous in Botany

A couple comes everday and feeds it uncooked oats. Also, the rabbit has all the "salad" it wants at the park.

2006-12-30 06:52:47 · 2 answers · asked by Shaggy 3 in Zoology