Science & Mathematics - 29 November 2006

this is college algebra and my book is really horrible can someone please help me understand the steps to this problem so I'll know for the future. I'm going insane.

v[x] - v[3x+3] = 1
I'm using v[ ] to represent a radical sign because there isn't one on the keyboard... :(

2006-11-29 13:05:34 · 3 answers · asked by Lumpy 2 in Mathematics

For example, birds molt in spring and fall. Dogs shedding fur, etc. I'm looking for a detailed answer besides "cold weather". Are there other factors such as light exposure, barometric pressure, etc.

2006-11-29 13:04:03 · 2 answers · asked by here_nor_there 4 in Zoology

and, what does sinhx mean?

2006-11-29 13:02:34 · 4 answers · asked by free aung san su kyi forthwith 2 in Mathematics

i have one teacher that says that blood is red and my other teacher says its blue or green( i dont know exactly) it only turns red when it has contact with oxygen. so what is it?

2006-11-29 13:02:24 · 9 answers · asked by Anonymous in Biology

Explain Abstract:

Bcl-2 family proteins are potent regulators of programmed cell death. Although their intracellular localization to mitochondria and the endoplasmic reticulum has focused research on these organelles, how they function remains unknown. Two members of the Bcl-2 family, Bax and Bak, change intracellular location early in the promotion of apoptosis to concentrate in focal clusters at sites of mitochondrial division. Here we report that in healthy cells Bax or Bak is required for normal fusion of mitochondria into elongated tubules. Bax seems to induce mitochondrial fusion by activating assembly of the large GTPase Mfn2 and changing its ubmitochondrial distribution and membrane mobility—properties that correlate with different GTP-bound states of Mfn2. Our results show that Bax and Bak regulate mitochondrial dynamics in healthy cells and indicate that Bcl-2 family members may also regulate apoptosis through organelle morphogenesis machineries.

2006-11-29 13:02:08 · 4 answers · asked by Anonymous in Biology

What is the solution to the inequality?

2006-11-29 13:01:55 · 5 answers · asked by ~*Lil *~ ~ 1 in Mathematics

2006-11-29 13:01:50 · 4 answers · asked by celticevening 1 in Mathematics

This question was on my exam today. I looked it up but still not sure. Oxygen is insoluble in water and plasma is made up of 90% water. Also fibrin is a substance converted from fibrinogen protein. If fibrinogen protein is in plasma, does this mean that fibrin protein is in blood plasma? The question on the exam asked what was NOT in plasma: oxygen, fibrin protein, antibody, or electrolyte?

2006-11-29 13:01:12 · 6 answers · asked by Ana 4 in Biology

Scientist have a hard time finding "How the earth started" can you give us your thoughts. that well be great. or e-mail me at skk_50cent@yahoo.com

2006-11-29 12:59:42 · 9 answers · asked by Bryan R 1 in Astronomy & Space

My science class is doing an egg drop contest. We are goin to drop egg from about 10 feet up. You HAVE to use only these materials:
15 straws 15 rubber bands
15 popsicle sticks 1 meter of string
1 sheet of copy paper 1 meter of tape
10 paper clips 1 raw egg

And if its light I get bonus points.
Can somebody help tell me how to build on of these egg drop thingys so it wont't break

2006-11-29 12:59:09 · 5 answers · asked by Natasha D 2 in Engineering

ok, i am just making sure this is correct. I am givin this.

f(x,y,z) = x^2 - y*z +z^ 2
a(0,1,1) b(1,3,2)

find a point c on the line joining a and b such that:
f(b)-f(a) = Gradient(f(c)) DOT (b-a).

Heres my work:

f(b) - f(a) = 2
b - a = (1,2,1)
f(c) = xo^2 - yo*zo +zo^2
Gradient(f(c)) = (2xo*I - zo*J + (2zo - yo)*K)

after i figured all that out i straight subsituted into the original proof statement:
f(b)-f(a) = Gradient(f(c)) DOT (b-a).

After simplifying i got:

2xo - yo - 2 = 0

why did my zo dissapear (if it didnt then what?) and can i just pick any number for xo or yo and solve for the other then my point will be:

c (1,0,0) if i set xo to 1

Please verify or falsify and help. Thanks in advance.

2006-11-29 12:58:14 · 1 answers · asked by Anonymous in Mathematics

a swimming pool 5 m wide by 10 m long is filled to a depth of 3-m. what is the pressure on the bottom due only to water?

I am trying to use the formula P=pgh. Where g=9.81 m/s2 and i assume H equals 3. I know the answer is 3x10^4 Pa. So do I just need to look up the density of the water or am i missing a step?

2006-11-29 12:56:45 · 3 answers · asked by Anonymous in Physics

I graduated last June. I decided I wanted to take a year off school to really find what I want to do with my life, and of course to save up money for school finances. I love being swamped with work and always busy, even if it means no time for relationships. But I've been working ALOT and volunteering at the Hospital ALOT. I decided I want to become a doctor. I know it's not an easy path to go and not always assuring, but it's what I really really want to do. I know that there is Pre-Med major, then Med-School, but then what? I mean, does anybody know exactly what the real path is like, with debts and all that? I've researched many sites and I'd rather know from a person with experience. I'm sorry this is like a book, but please help? Thanks.

2006-11-29 12:56:42 · 5 answers · asked by linda l 2 in Medicine

2006-11-29 12:56:41 · 3 answers · asked by ibid 3 in Chemistry

The force of air resistance acting on a falling object is approximated by the statement that it is proportional to the object's velocity and directed upward. If the object falls fast enough, will the force of air resistance eventually exceed the weight of the object and cause it to accelerate upward? explain......

2006-11-29 12:56:38 · 6 answers · asked by billf39 2 in Physics

find the common tangent line between:

y= x^3 -3x+4

and

y=3(x^2 - x)

thanks for helping me out

2006-11-29 12:56:02 · 3 answers · asked by leksa27 2 in Mathematics

2006-11-29 12:55:36 · 22 answers · asked by Adrian P 1 in Astronomy & Space

2006-11-29 12:55:34 · 5 answers · asked by Anonymous in Physics

2006-11-29 12:53:32 · 7 answers · asked by nobleisback 1 in Mathematics

If a test is 25% of your grade and you get a 60 and you have a 82 in the class what would be your final grade?

2006-11-29 12:53:29 · 10 answers · asked by mrkittypong 5 in Mathematics

A spotlight is on the ground 100ft from a building that has vertical sides. A person 6 ft tall starts at the spotlight and walks directly toward the building at a rate of 5ft/sec.

a) how fast is the top of the persons shadow moving down the building when the person is 50 feet away from the building?

b) how fast is the top of the shadow moving when the person is 25 feet away?

thank you

2006-11-29 12:51:18 · 4 answers · asked by leksa27 2 in Mathematics

please please help me answer this it's for this debate i'm having in my class and i just need help cause i can't find enough answers anywhere!! please i'm really desperate

2006-11-29 12:48:43 · 12 answers · asked by suju's lovely girl 1 in Earth Sciences & Geology

If science is based on just fact.Impirical collected fact,that proves why the things occur? A scientific matter of fact.Then why is there big gaps.Where they have to conjecture to fill in a missing parts.Then they faith that it is true.Without complete fact.An if your belief system is based on that.Then wouldn't it be considered a religion?Plus it blows my that what we know is true now.Will soon to be disproven by someone else.I am not saying is crap.We have learned a lot of cool stuff.But is still a faith.
I do have a good question about the big bang theory.The universe expands and contracts.Where did the original matter come from?

2006-11-29 12:48:05 · 13 answers · asked by Anonymous in Other - Science

2006-11-29 12:47:10 · 4 answers · asked by CLIVE C 3 in Medicine

2006-11-29 12:47:06 · 5 answers · asked by kukulcangod 1 in Physics

How would I go about verifying this problem?

sin^3 β + cos^3 β / sin β + cos β = 1 - sin β cos β

2006-11-29 12:46:47 · 5 answers · asked by Autumn 2 in Mathematics

2006-11-29 12:44:46 · 4 answers · asked by Laurence B 1 in Zoology

why do many scientist support sending astronauts to mars even though the viking probe found no sighs of life on that planet

2006-11-29 12:43:54 · 8 answers · asked by marimolpad 1 in Astronomy & Space

The metal or the nonmetal?

2006-11-29 12:43:49 · 2 answers · asked by dylanklassen 2 in Chemistry

Please help me I beg you. Im really bad at algebra so please help. Please teach me.

Write an equation of a line with the given slope and y-intercept
1. m=0, b=1

Write an equation of a line through the given point with the given slope.
2. (6,7); m= undefined

Thank you so much for all your help.

2006-11-29 12:43:30 · 6 answers · asked by Anonymous in Mathematics