Science & Mathematics - 30 October 2007

rewrite the expression (log base 2 of x) + (3 log base 2 of y) -(5 log base 2 of z)it look like this log{2] (x) +3 log[2] (y) -5 log [2](z)
l
og[2] ( x y^3 / z^5 ) this is wrong please help

2007-10-30 14:19:55 · 2 answers · asked by star baller 360 5 in Mathematics

One canned juice is 30% orange juice; another is 10% orange juice. How many liters of each should be mixed together in order to obtain a 20L of 19% orange juice?

2007-10-30 14:19:21 · 3 answers · asked by Wonderer 1 in Mathematics

Listed as 272.4 in the ICD-9-CM medical coding index.

What is hyperlipidemia?

2007-10-30 14:18:24 · 4 answers · asked by Doesntstayinvegas.com 3 in Medicine

Who Should Decide?
You are health care providers (doctors, nurses, technicians) in a transplant team. You only have one heart and a range of possible recipients on the donor list. Who gets the transplant? Explain who you believe deserves the heart. Be specific. What makes your candidate a priority over all others?

12 year old female, concert violinist
45 year old divorced father of two, computer engineer
16 year old male, high school dropout
65 year old widower, retired Navy Captain
24 year old woman college graduate , equal rights activist
36 year old stay at home mom, mother of 4
52 year old inventor, single father of twins

2007-10-30 14:16:30 · 4 answers · asked by Chang 1 in Medicine

Find the slpe of a ladder placed 4ft from the wall and touching the wall at 12ft


&

What describes the relation ship between
6x - 2y =1 and line x + 3y =12
parallel perpendicular skew or equivalent

2007-10-30 14:15:14 · 1 answers · asked by Pam O 1 in Mathematics

im really about developing physic abilities and i tried telekinesis the other day.I did about 10 mins of meditation first and then proceeded trying to move a little piece of paper i placed in front of the computer keyboard.Following some technique i found on the web , i got really concentrated and placed my hands close to the paper , after 3 minutes or so of not moving , i decided to quit and rest for a while , at the moment of saying that i switched my attention and looked right to the electricity socket where the computer was plugged , and suddenly the computer SHUT DOWN BY ITSELF as if the lights as gone off, but actually that didnt happen since the lights on my room didnt go off, and my computer is in perfect conditions so i dont think it could be a virus or something ..do you think all that energy i had built up instead of moving the paper just affected the computer?

2007-10-30 14:10:21 · 10 answers · asked by Anonymous in Parapsychology

a)the temperature increased
b)the temperature decreased
c) neither
I was told the answer is B, but I do not understand why. Can anyone explain?

2007-10-30 14:10:14 · 1 answers · asked by AnonymousOne 2 in Physics

I'm writing a sci fi story, and ran into a mental problem. Very short version, the Canadian Space Agency offered $500 per kilogram of samples, chosen by CSA's own scientists, taken from every planet and major body (like moons and interesting asteroids), for study. The cargo capacity of the ship is large, so I'm figuring 6K kilos of samples, or 3 million dollars.

$500 is a guess from nowhere, though. I'm thinking it'd probably be higher, really, considering satellites and ships often cost well into the billions. And the scenario takes place in today's timeframe (main character gets a ship out of nowhere, in short)

What would your estimates be for that sort of thing? Or, would you think they'd offer per liter, or just a pre-agreed lump sum for the whole batch?

2007-10-30 14:09:51 · 3 answers · asked by Khana S 3 in Astronomy & Space

i have a theory that dark matter could be a gravtational pull and why black holes are black and not green purple or yellow and why they can bend light

2007-10-30 14:05:23 · 2 answers · asked by Anonymous in Astronomy & Space

Its a Halloween extra credit i have in my class :)

2007-10-30 14:04:53 · 2 answers · asked by LovelyLilly 2 in Mathematics

2007-10-30 14:04:07 · 1 answers · asked by truongphuonghathefirsthokage 2 in Mathematics

Do u have any good advices on how to do them effectively so that I won't make a lot of mistakes. Even websites with that info would help me.

Thanks in advance !

2007-10-30 14:03:22 · 1 answers · asked by Brilliant Queen (BQ)_forever !!! 5 in Mathematics

2007-10-30 14:01:10 · 3 answers · asked by Anonymous in Astronomy & Space

Make up a polynomial that has the following characteristics: crosses the x-axis at -1 and 4, touches the x-axis at 0 and 2, and is above the x-axis between 0 and 2.

2007-10-30 14:00:40 · 1 answers · asked by Anonymous in Mathematics

if im supposed to draw a 2 by 2 by 3 box, which one is the height, the width and the length?

2007-10-30 14:00:07 · 15 answers · asked by booo 1 in Mathematics

rewrite the expression
log base 2 of x +3 log base 2 of y - 5 log base 2 of z
as a single logarithm log bas 2 of A

2007-10-30 13:59:49 · 3 answers · asked by star baller 360 5 in Mathematics

The varieties of tigers in the same species (panthera tigris) like the bengal tiger, siberiean tiger, etc.

2007-10-30 13:59:10 · 2 answers · asked by I am a person 3 in Zoology

What is the source of heat in the Earth's mantle?

(This is for a crossword puzzle but I can't find the answer anywhere. It should start with an R and the word consists of 13 letters)

2007-10-30 13:55:48 · 1 answers · asked by Anonymous in Earth Sciences & Geology

rewrite the expression:
ln 7 +2ln x + 5 ln (x^2+9)
as a single gogarithm ln A

2007-10-30 13:51:58 · 3 answers · asked by star baller 360 5 in Mathematics

2007-10-30 13:49:01 · 6 answers · asked by Anonymous in Physics

Does anyone know if fisher-price makes a telescope that would be somewhat operable by a 5 yr old? My daughter says she wants one for xmas but I am wondering if I will be able to find one that works well, but that she can help use too... thanks

2007-10-30 13:44:20 · 6 answers · asked by Anonymous in Astronomy & Space

2007-10-30 13:44:10 · 3 answers · asked by Anonymous in Biology

If the Big Bang Theory is true, and all matter was condensed into one extremely small and dense area, then what was outside of the area where all matter existed?

2007-10-30 13:43:59 · 4 answers · asked by Anonymous in Physics

In nuclear reaction there is often a measurable difference in the masss of the reactants and the mass of products that is not the result of error in massing.What is the reason for the differences in mass Value?

2007-10-30 13:43:45 · 1 answers · asked by Ollie 1 in Chemistry

2007-10-30 13:43:11 · 2 answers · asked by buzz74us2 1 in Biology

I needed help figuring out the following problem. all help is greatly appreciated :)

The velocity of the transverse waves produced by an earthquake is 8.9 km/s, and that of the longitudinal waves is 5.1 km/s. A seismograph records the arrival of the transverse waves 68 s before the arrival of the longitudinal waves. How far away is the earthquake?

2007-10-30 13:42:53 · 2 answers · asked by Anonymous in Engineering

2C8H18(l)+ 21 O2(g) --> 8CO(g) + 8CO2(g) + 18H2O
???delta H

Given
2C8H18(l) + 25 O2(g) ---> 16CO2 (g) + 18 H2O(l)
delta H -11,020 kJ

2CO (g) + O2 (g) --> 2CO2(g) delta H -566.0 kJ

2007-10-30 13:40:10 · 1 answers · asked by sophie's mom 1 in Chemistry

I have do a report on one, and I was wondering if those was at least semi easy one I can do. It would help it's not common, because I get extra points if nobody else did it.

Thanks!

2007-10-30 13:39:30 · 2 answers · asked by Yahoo! User 2 in Mathematics

i've heard that you can spray Axe or hairspray on your hand or anything else and light a match and it will catch on fire, but wont do any damage. is this true?

2007-10-30 13:39:17 · 6 answers · asked by katiboo:) 2 in Chemistry

Show that lim as x->c of f = infinity if and only if lim as x approaches c of 1/f = 0.

2007-10-30 13:39:02 · 1 answers · asked by Anonymous in Mathematics