Science & Mathematics - 9 July 2007

I know it has to do with the development of B cells which is why I asked the previous question.

2007-07-09 15:57:12 · 4 answers · asked by Anonymous in Medicine

A person randomly selexts answers to all 10 questions on a multiple choice quiz. each question has 1 correct answer and 3 incorrect answers. find the probability that the indicated number of answers are correct.

the formula

P=nCrp^r(1-p)^n-r

Question
Exactly 7

#2 Find the probability that a batter with each batting average given below will get at most 3 hits in the next 5 bats.

0.250

2007-07-09 15:56:59 · 4 answers · asked by Bird 2 in Mathematics

2007-07-09 15:56:56 · 20 answers · asked by lizeth l 1 in Zoology

I'm considering changing my major to Meteorology (what I've always wanted to do) but am very hesitant because of the high level of math and physics involved...if I have a history of struggling in math (the lower levels like Trig and Pre-Calc), should I not even consider Meteorology?

Also, if anyone knows, I've heard that women who want to have a family shouldnt go into Meteorology because of the shifts/hours of the job....any women in Meteorology have any comments on that?

2007-07-09 15:56:10 · 4 answers · asked by hlrising 2 in Weather

2007-07-09 15:54:18 · 4 answers · asked by Curious 1 in Chemistry

2007-07-09 15:53:54 · 8 answers · asked by Leader 2 in Astronomy & Space

2007-07-09 15:52:22 · 4 answers · asked by holly c 1 in Zoology

what is the differences between the present space shuttle and the new orion spacecraft?

2007-07-09 15:52:15 · 2 answers · asked by Anonymous in Astronomy & Space

2007-07-09 15:49:45 · 22 answers · asked by 6bits 3 in Zoology

2007-07-09 15:36:06 · 10 answers · asked by Kyle J 2 in Astronomy & Space

Well some people can't really get off this strange thought that we have been created just 6000 years ago.
ok let this settle, in my opinion this is ... uhm...

Now since there's strong evidence that this planet is 4.5 billion years old... then how comes that we GOT A USED ONE... and not a brandnew ?

now let us guess who owned it before ...

2007-07-09 15:32:44 · 5 answers · asked by blondnirvana 5 in Earth Sciences & Geology

2007-07-09 15:31:41 · 9 answers · asked by yuchi1 1 in Zoology

Mutiply and Simplify
√20√18=2√5*3√2=6√10

1)How do you do √20√18 this please explain. I don't just give me the anwser, I want to know how to do it please.

2) How do you do √3³*5³

It doesn't make sense cause it would have to be √3*√5*√3*√5*√3*√5 and this would make no sense. Cause a √x² is like √x*√x

3) √432=√2^4*3³=4*3*√3=12√3
This doesn't make sense can someone explain this to me PLEEASE/Show steps.

2007-07-09 15:26:27 · 4 answers · asked by Anonymous in Mathematics

Assuming that the theory of evolution is true, how is it that apes still exist? Did they choose not to evolve? I am not dismissing the theory just curious as to why they (apes, chimps, etc.) are not extinct, and there is a need to find a missing link that is no long with us. Now, before I get attacked I want to make it clear that I have yet to draw my own conclusion, and I am searching for answers from both sides of the fence (evolution/creation). Thanks in advance!!

2007-07-09 15:25:36 · 10 answers · asked by joe sniffy 2 in Other - Science

Is it the earth or the clouds?

2007-07-09 15:23:03 · 6 answers · asked by some guy 1 in Weather

if there is nothing then how does something come in? what im trying to say is how did space start with nothing then something came out. The big bang says something exploded but then again there was nothing so how did something come out of nothing?it might be confusing you just got to think...

2007-07-09 15:21:32 · 14 answers · asked by Anonymous in Astronomy & Space

2007-07-09 15:20:05 · 6 answers · asked by Db 1 in Engineering

2007-07-09 15:17:34 · 3 answers · asked by Anonymous in Biology

Yea Baby...!

I finally got a picture of that spider that is in my Shed,actually in my Computer Room thats in the shed

The original Spider I saw long ago looked like this one except it was flatter with Black and White rings.

Please tell me all about this Spider.
Is it dangerous

See the Spider.
http://www.photocarshowplus.com/Spiders-in-My-Shed

2007-07-09 15:15:53 · 7 answers · asked by Vulcan 1 5 in Zoology

SERIOUS ANSWERERS ONLY.

2007-07-09 15:13:48 · 13 answers · asked by Anonymous in Mathematics

-5x^2 -x(x(4/x)+10) = -4x

-5(x-3) + 2 (3 - x) + x = -14 + x

2007-07-09 15:12:48 · 2 answers · asked by Arthur M 1 in Mathematics

Ok people, how do you solve this problem and express it in correct scientific notation
(7.1*10-2) + (5*10-3) ?

2007-07-09 15:11:54 · 7 answers · asked by Anonymous in Chemistry

could an example of surface tension be filling a glass jar with water as high as you can without spilling it and adding pennies until water spills and then seeing how many pennies did it hold without spilling. Can surface tension also be filling a jar to the very tob and taking a needle and getting it to float on the surface of the liquid?

Can filling a cup 1/2 way with water and placin an ice cube in the water be an example of cohesiveness and highest density at 4 degrees Celcius?

Can dipping a clear straw with a small diameter about half way in water be an example of capillary action? Would the same thing occur if the tube had a diameter 5 times as large?

If you place a container of water on a hot stove until it reaches 100 degrees celcius in order to boil this gives water the property of high heat of vaporization but WHY does water need so much heat at the molecular level to change state?

what would be an example of high specific heat?

2007-07-09 15:10:25 · 2 answers · asked by maxfashun911 1 in Chemistry

Camphor is a natural compound from a tree found in Java, Brazil, China, and other countries. A solution of camphor in ethanol is a mild topical antiseptic. One such solution contains 1.60 g camphor dissolved in 137 mL of ethanol (ρ = 0.785 g/mL). What is:

1.molality of camphor in the solution.
______m

2.mole fraction of camphor in the solution

3.mass percent of camphor in the solution.
______percent

2007-07-09 15:09:24 · 3 answers · asked by Anonymous in Chemistry

1) Why does √2²*7³= 2*7*√7?????


2) Using the same method.
√2^5*3²*7³=
doesn't make sense
3*7√2³*√7=21√56 this would be the final anwser, please explain

4) √20√18=2√5*3√2
Why can't i use 4*5 and 9*2???

What is the prime factor of 784?

What is a prime factor?

PLEASE IM SO CONFUSED MATH DOESN'T EVEN MAKES SENSE, THE √ ESPICALLY

2007-07-09 15:00:21 · 4 answers · asked by Anonymous in Mathematics

2007-07-09 14:55:42 · 7 answers · asked by anmol 1 in Zoology

The spider is small, (Samller than a penny). Found in Upstate New York on a sunny, warm, summer day.

2007-07-09 14:54:02 · 1 answers · asked by HCOx410 3 in Zoology

2007-07-09 14:52:28 · 4 answers · asked by zac797 1 in Mathematics

2007-07-09 14:51:43 · 1 answers · asked by oldan 1 in Zoology

I'm really bad at mathematics, and I really need help . . . so please help me. Well, first of all, I guess I could say I'm bad with algebra, or just variables. Like the following question.
- If the three digit numbers x and y are each composed of three distinct non-zero digits, what is the greatest possible value of x - y?

Please explain how to do the above problem, and the following one!
- In the addition problem below, if the letters A, B, and C represent different digits, what does each one equal?

AA + AB = CCC


Please help, and thanks ahead of time! (I really want to be as smart as all of you!)

2007-07-09 14:49:43 · 2 answers · asked by Anonymous in Mathematics