Science & Mathematics - 6 December 2006

2006-12-06 12:40:28 · 4 answers · asked by Anonymous in Astronomy & Space

the probability tht an adult posses a credit card is .70. two adults are selected a random..t he probability that the first adult possess a credi card and the second adult does not posses a credit card is: ??? how do you work this out

2006-12-06 12:40:24 · 1 answers · asked by CCG 1 in Engineering

Say if you know something good!
like evolution, or something...

2006-12-06 12:39:43 · 0 answers · asked by brownboy 6 in Zoology

I used integration by parts:
u = y v = -cos(y)
du = 1 dv = sin(y)

y * -cos(y) - integral[1 * -cos(y)] =
y * -cos(y) + sin(Y)

However, when i take the derivative,
d/dy (-ycos(y) + sin(y))
-y*-sin(y) + (cos(y) * -1) +sin(y)
y*sin(y) -cos(y) + sin(y)
Which doesn't equal y sin(y). What did I do wrong?

2006-12-06 12:39:39 · 2 answers · asked by j 4 in Mathematics

2006-12-06 12:36:47 · 2 answers · asked by Anonymous in Botany

During stimulation of the parasympathetic nerves, plasma levels of epinephrine increase.

2006-12-06 12:36:23 · 3 answers · asked by escamilla_john 1 in Biology

3s^2+8s+4

2006-12-06 12:35:39 · 5 answers · asked by Kendall 1 in Mathematics

I was wondering what can we do about the ice caps melting. Billions of lives would be lost and atleast 1/4 if not 1/5 of mankind would live. Its a scary thing but we must really do our part to the enviroment.

2006-12-06 12:35:37 · 8 answers · asked by Anonymous in Earth Sciences & Geology

How do astronouts use the bath room on the space shuttle

2006-12-06 12:34:52 · 4 answers · asked by cliffcox76 1 in Astronomy & Space

Delegates of the 1787 Constitutional Convention established the framework for the United States Senate to include two senators from each of the U. S. states. Today, there are 100 senators. If a new five-member committee on mathematics education is to be created but no state represented by more than one senator, in how many ways can this new committee be formed?

Best answer will be given to the first correct answer that explains why there answer is correct ( Like showing your work).

2006-12-06 12:34:50 · 3 answers · asked by HOLA 2 in Mathematics

If so, what do you think they are like?

2006-12-06 12:34:16 · 6 answers · asked by Riley 2 in Physics

Find the centripetal force of a geocentric satellite in orbit if it is 500km above the Earth and has a mass of 650kg? (Hint: what is the period of a geocentric satellite?)

2006-12-06 12:32:46 · 3 answers · asked by Ha!! 2 in Physics

2006-12-06 12:31:42 · 6 answers · asked by Rob P 1 in Mathematics

I always wondered if they had the ability to control the cameras on Earth, or if it was done via remote control, or what.

2006-12-06 12:30:48 · 9 answers · asked by Marsam233 2 in Astronomy & Space

What is the size of column to get the better fraction?

2006-12-06 12:30:14 · 2 answers · asked by rosy blue 1 in Chemistry

a picture on the map would good

2006-12-06 12:28:49 · 4 answers · asked by kalargent 1 in Geography

-24bc^4 - 40bc^3 - 32bc^2

2006-12-06 12:28:14 · 4 answers · asked by 988898.23225 1 in Mathematics

Dont just say it in science talk iI get plenty of that at school and in my textbooks.

2006-12-06 12:27:30 · 3 answers · asked by Dolfanmiamiman . 2 in Biology

I am doing a sci fair project and want to include how they work

2006-12-06 12:26:53 · 1 answers · asked by j a 2 in Earth Sciences & Geology

A Car travels on the freeway at an averages speed of 60 miles per hour. How long does it take to travel 320 miles?
how many hours_? and minutes_?

2006-12-06 12:25:29 · 11 answers · asked by tiffany_da_finest 1 in Mathematics

what is the difference between the critical value of z and the observed value of z

2006-12-06 12:25:27 · 3 answers · asked by CCG 1 in Engineering

Assume they both have the same Molarity.

2006-12-06 12:24:09 · 3 answers · asked by Ruphert J 1 in Chemistry

2006-12-06 12:23:28 · 4 answers · asked by asalia 1 in Medicine

Express sin^2 u * cos^2 u in terms of cos4u

2006-12-06 12:22:57 · 3 answers · asked by ? 3 in Mathematics

2006-12-06 12:22:38 · 6 answers · asked by picklerelish 1 in Biology

2006-12-06 12:22:23 · 3 answers · asked by Wisdom=Magenta 3 in Mathematics

I already know that the blood gets oxygen from the lungs and pumps back into the heart, but where does the nutrients come from?

2006-12-06 12:19:54 · 6 answers · asked by abcdefg 1 in Medicine

0<=x>2pi

2006-12-06 12:19:51 · 4 answers · asked by Eddy 2 in Mathematics

2006-12-06 12:17:01 · 4 answers · asked by Anonymous in Earth Sciences & Geology

I have this logic (kind of) math problem for school that's due on Friday and I need a lot of help.

It is a triangle made out of circles. There are 5 circles on the bottom, 4 on the 2nd, 3 on the 3rd, till get it gets to one and makes a triangle.

The problem is writing a number between 1-15 in each of the boxes, and using each number once. You find the difference and absolute value, starting from the bottom, of two circles by each other, and write the solution in the circle that's stacked above it.

If any of you know the solution to this, I would greatly be thankful if you gave me the answer. I can't find a pattern and there are probably hundreds of combonations.

Sorry if my description isn't good enough. I wish I could put pictures.

Thanks!

2006-12-06 12:16:50 · 2 answers · asked by zgenator 2 in Mathematics