Science & Mathematics - 6 November 2007

a) if two cards are drawn without replacement from a standard 52-card deck, what is the probability that both cards are the same suit?

b) if two numbers are selected without replacement from the set (1,2,3,4,5) what is the probability that oth numbers are odd?

c) if four coins are tossed, what is the probability that the result will be all tails?

2007-11-06 05:08:15 · 5 answers · asked by Anonymous in Mathematics

My results show that generally they make them faster and wider - however why is this?

thanksxx

2007-11-06 05:07:35 · 4 answers · asked by *ceri* 2 in Geography

I'm more of a spiritual person than religious. I've been wondering lately if there is evidence that guardian angels/spirit guides are really there watching and guiding you the whole time?

I've been questioning it because I've gone through a rough and challenging year - with a family member diagnosed with cancer, a grandma passed away this summer, lost 2 close friends over some silly misuderstanding and a relationship that didnt worked out?

2007-11-06 05:05:38 · 20 answers · asked by mitchchan 5 in Paranormal Phenomena

Refering to males.

2007-11-06 05:04:36 · 1 answers · asked by xyz 1 in Biology

A .42 kg soccer ball approaches a player horizontally with a velocity of 17m/s to the north. The player strikes the ball and causes it to move in the opposite direction with a velocity of 23m/s. What impulse was delivered to the ball by the player? Answer in units of KG x M/s.

2007-11-06 05:01:38 · 1 answers · asked by lucas_andreika 1 in Physics

Solve these simultaneous equations

4x+2y=36
5x+4y=54

x=
y=

9x+7y=55
2x+28y=118

x=
y=


x+9y=95
2x+6y=70

x=
y=


5x+10y=50
6x+6y=36

x=
y=




ne1 help? i cnt do this nd has to be dun soon?

2007-11-06 05:01:24 · 7 answers · asked by Anonymous in Mathematics

2007-11-06 04:59:00 · 7 answers · asked by hfb1957 1 in Physics

my answer is (8x^2-4y^2) (8x+2y) am i right or wrong?

2007-11-06 04:58:37 · 8 answers · asked by sara c 1 in Mathematics

Plastic is made from petroleum, and oil refineries emit cancer-causing Benzene (these 2 we know)... when you heat plastic, particles enter the liquid/food (at acceptable levels, who knows?)... like bottled water, being driven to a store near you in alum. trucks, driving in the hot sunshine, etc. etc. So? what happens when you re-heat your Chinese food, etc? (Thinking aloud here, to see who's got ideas...)

2007-11-06 04:58:31 · 3 answers · asked by Anonymous in Chemistry

Supposedly we landed on the Moon in 1969, but how did we get there? The space shuttle launch videos show the shuttle going up into the sky, but you would have to dig through the ground to get out of Earth.

Is this the main reason that people don't believe that we landed on the Moon?

2007-11-06 04:58:12 · 17 answers · asked by Anonymous in Astronomy & Space

Hia im haveing some problems with my homework. I need to find out what short and long depth perception are, the cures AND the ray diagrams ! Can anybody help me ???
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2007-11-06 04:56:42 · 0 answers · asked by sophie l 1 in Physics

send a pic. what traits are dominant and what traits are recessive?

2007-11-06 04:56:31 · 3 answers · asked by ray k 1 in Zoology

2007-11-06 04:54:41 · 2 answers · asked by ruby 2 in Mathematics

do u believe that neil armstrong really landed on the moon?? alot of ppl believe he neva

2007-11-06 04:53:34 · 24 answers · asked by Anonymous in Astronomy & Space

a special vacation plan advertises 5 nights and 14 meals for $565 or 7 nights and 20 meals for $795. how much is the per night and the per meal charge thanks to all

2007-11-06 04:51:43 · 4 answers · asked by dontstandoncorners 5 in Mathematics

if you cut a atom a half then cut that half in half and continue as long as there is a half it will go on forever, now if you look at space when does it end, how can there be an ending it can not stop, so where do we stand ??

2007-11-06 04:51:26 · 6 answers · asked by deepblue 2 in Astronomy & Space

2007-11-06 04:46:10 · 2 answers · asked by Anonymous in Mathematics

i think this might be the answer but im might be wrong i dont know...

3x^7-2x^6-14x^5+5x^2-9x-8

2007-11-06 04:44:22 · 8 answers · asked by Anonymous in Mathematics

explain how the net charge on a molecule an important factor in electrophoresis in results in related to identifing a suspect in a crime using a sample of DNA?

2007-11-06 04:42:58 · 2 answers · asked by Anonymous in Biology

On mybio lab i cant figure out this question, please help. " When a person in the hospital is given fluid intravenously(an I.V), the fluid is typically saline(salt) solution with about the sam water concentration as human body tissues. Explain how the use of distilled water in place if this saline solution would expected to upset the patient's homeostasis. Your answer should refer to the process of diffusion." PLEASE HELP!!

2007-11-06 04:38:56 · 4 answers · asked by Anonymous in Biology

Apparently, in the now famous Erin Brockovich story, PG&E told the people of Hinkley, CA that the water they were taking was harmless because the hexavalent chromium turned into chromium 3 in the stomach. I have read about this and it seems that people have all sorts of opinions. So, is this possible, and, if it isn't, why not?

2007-11-06 04:36:11 · 3 answers · asked by Anonymous in Chemistry

Here is the question...
There are two cars: an old truck and a fairly new car. The truck currently has 16 times as many miles on it as the car had when the truck had 3 times as many miles as the car has now. Between now and then, each vehicle has been driven the exact same number of miles. The truck has not yet been driven 100,000 miles. All mileage amounts are in thousands. How many miles has the car been driven now?

2007-11-06 04:32:41 · 1 answers · asked by Anonymous in Mathematics

step-by-step please...

2007-11-06 04:28:48 · 9 answers · asked by Anonymous in Mathematics

ok my first main question is about the new planet definition, recently the 2006 definition of a planet stated that it was a celestial body that:
is in orbit around the Sun,
has sufficient mass so that it assumes a hydrostatic equilibrium (nearly round) shape, and
has "cleared the neighborhood" around its orbit.
b/c of this and other reasons pluto is no longer considered a planet. I was wondering though why isn't neptune no longer considered a planet due to the fact that pluto's orbit intersects with neptunes stating that neptune has not 'cleared the neighborhood' around its orbit therefore not qualifying all three statements of a planet.

also on an aside note because Pluto's orbit intersects with Neptune's technically Pluto was the 8th planet in the solar system from 1979 to 1999 and Neptune was the ninth, did I just fall asleep in class and missed this? b/c I don't remember teachers telling me this....was that common teaching? or did they just leave that out as to not confuse us.

2007-11-06 04:28:01 · 8 answers · asked by dvj1900 2 in Astronomy & Space

1)Solve the equation.

(1/9)^x-3 = 27^2x-1

2007-11-06 04:25:26 · 4 answers · asked by Anonymous in Mathematics

How is this done?

2007-11-06 04:23:31 · 1 answers · asked by RogerDodger 1 in Mathematics

2007-11-06 04:21:09 · 2 answers · asked by Anonymous in Chemistry

4 bioligy

2007-11-06 04:20:37 · 4 answers · asked by Anonymous in Biology

2007-11-06 04:20:12 · 2 answers · asked by annacaygob 1 in Biology

2007-11-06 04:19:54 · 5 answers · asked by lexiis 1 in Astronomy & Space