Science & Mathematics - 14 February 2007

2007-02-14 04:42:07 · 10 answers · asked by Kilroy 4 in Earth Sciences & Geology

I received an answer to my question- F(x)=1/x, the difference quotient of f. Simplify fully, However, I'm still confused. Can someone make it clear as to how you divide and multiply these letters to obtain the answer. I have a big problem understanding how you can divide/multipy letter. I'm 50 years old tring to get a college education. I thank you for your help

2007-02-14 04:41:32 · 2 answers · asked by shyra w 1 in Mathematics

2007-02-14 04:41:22 · 8 answers · asked by Kilroy 4 in Earth Sciences & Geology

using the quotient rule differentiate the function: k(t)=t^5-(1)/ln(4t) (t>1/4).
using the composite rule differentiate the function: k(x)=sin(1/3x^3/2) (x>0)

2007-02-14 04:40:37 · 11 answers · asked by mini_dilligaf 1 in Mathematics

So the relationship is:

rx congruent to rb modulo m

is

x congruent to b modulo (m/gcd(m,r))

.

Anyhelp would be excellent.

2007-02-14 04:39:51 · 2 answers · asked by Napper 2 in Mathematics

whats the easiest way to find the cube root of a decimal number greater than 4 digits.

2007-02-14 04:39:43 · 3 answers · asked by sanko 1 in Mathematics

2007-02-14 04:39:08 · 3 answers · asked by JAMES 1 in Physics

We burn wood in a furnace that is hooked up to our central air/ht system. One of my children is asthmatic and I would like to know if the heat from the furncace will kill the mold or release it into the air. It goes through the filter system before it reaches the household air. Do I need a special filter? I've heard black mold can be toxic to people, so Will it be incernated or released? Thank you for your help...

2007-02-14 04:38:16 · 4 answers · asked by twins2times 1 in Other - Science

What are the applications of transfer function? What is its use?

2007-02-14 04:36:22 · 4 answers · asked by Anonymous in Engineering

What is the enthalpy change when 50.3 grams of copper is heated from 10C to 150C?

The answer is not important, just show me how you work :)

2007-02-14 04:36:08 · 2 answers · asked by Anonymous in Chemistry

what's taxonomy of the animal: sponge?
(Kindom, Phylum, Class...)

2007-02-14 04:35:31 · 7 answers · asked by Lt. V 2 in Zoology

Actually I am doing a research on dipeptidyl peptidase 4 (DPP-IV) inhibitors and i would like to know more about the enzyme itself. Where is it biosynthesized in the human body? What is the pathway of its synthesis? When and how was it discovered? Do you know any useful references (books, journals, websites)?

2007-02-14 04:35:21 · 4 answers · asked by berry_nutty_tart 2 in Medicine

Given the fact that we can create artificial DNA, we can manipulate genes and create molecules with all science combined it should be possible to create "Artificial Soldiers" to go into battle for "natural" people,should we?

2007-02-14 04:34:37 · 10 answers · asked by Anonymous in Biology

I just bought a used TI-83 calculator, with no book. Does anyone know what buttons I need to use for fractions? On my old one it was an abc button, this one I am not seeing anything like that. Also, I found the square root button, however what do I use to make the 4th root, 3rd root of a number instead of just the square? Thank you SO much in advance, as I really need it for my math homework.

2007-02-14 04:32:52 · 6 answers · asked by celestial_fantasia 3 in Mathematics

The Toronto Dominion Center in Winnipeg, Manitoba, is 407 feet high. Suppose that a ball is projected upward from the top of the Center, and its position "s" in feet above ground is given in the equation. How long will it take for the ball to reach a height of 450 feet above the ground?

2007-02-14 04:32:38 · 2 answers · asked by Anonymous in Mathematics

are there any other species that have this problem? If not WHY?
I have heard that as the common man started walking upright, it caused the pelvis to squeeze together.

2007-02-14 04:32:03 · 11 answers · asked by Bistro 7 in Biology

f(x)=e^(7x)
g(x)=cos(2x)
f(t)=t^5 -(1)
g(t)=ln(4t) (t>0)
f(x)=x^(2/3) (x>0)
g(u)=sin(1/3u)

2007-02-14 04:31:32 · 2 answers · asked by mini_dilligaf 1 in Mathematics

Actually I am doing a research on dipeptidyl peptidase 4 (DPP-IV) inhibitors and i would like to know more about the enzyme itself. Where is it biosynthesized in the human body? What is the pathway of its synthesis? When and how was it discovered? Do you know any useful references (books, journals, websites)?

2007-02-14 04:30:45 · 1 answers · asked by berry_nutty_tart 2 in Biology

2007-02-14 04:30:34 · 6 answers · asked by frickenawesomekoreanandyouknowit 2 in Chemistry

2007-02-14 04:30:28 · 6 answers · asked by pila F 1 in Mathematics

A copper wire has a resistance = 0.501 ohms at 20 degrees C and has a temp coefficient of resistivity = 3.9e-3. A iron wire has resistance = 0.487 ohms at the same temp with a temp coefficient of resistivity = 5.0e-3. At what temperature do these two wires have the same resistance???? I have been using the equation R=R_ [ 1 + temp coefficient of resistivity ( T - T_)] in trying to find the temp but cannot come up with the right answer...

2007-02-14 04:28:32 · 2 answers · asked by Anonymous in Physics

I don't know if it is possible to get an explanation this way...but I am going to try cause my math book explains it like should already know!! I am pulling out my hair!!!

Solve the system by graphing.

y = - 2/3x
2x + 3y = 5

If there is someone who can show me the steps how to do this...I would be so grateful!!

2007-02-14 04:28:29 · 2 answers · asked by Alley OOP 1 in Mathematics

2007-02-14 04:28:19 · 8 answers · asked by Mizz Know It All 4 in Mathematics

Is there a way to dissolve and recover pvc from vinyl chloride fabric?

2007-02-14 04:28:09 · 4 answers · asked by joczr2 1 in Chemistry

Why are young things cute like kittens and old things ugly like my grandma? Or are there any exceptions to the rule?

2007-02-14 04:28:08 · 15 answers · asked by The Tinker 2 in Other - Science

what is the period of y+4cos(3x+pi/2)
and the period of y=4sin(1/3x-pi/2)

2007-02-14 04:27:24 · 2 answers · asked by Jessica R 1 in Mathematics

2007-02-14 04:25:16 · 23 answers · asked by Art Vandalay 1 in Astronomy & Space

2007-02-14 04:24:43 · 25 answers · asked by neon 1 in Astronomy & Space

2007-02-14 04:24:30 · 11 answers · asked by KIDD 1 in Mathematics

I just found out that my sister is ab- and I am ab+ is that possible? Someone said that we could not have the same parents.

2007-02-14 04:19:33 · 11 answers · asked by Megz 2 in Biology