Science & Mathematics - 25 October 2007

2007-10-25 10:40:12 · 6 answers · asked by d 1 in Mathematics

1. potassium sulfate 4.aluminunm oxygen
2. calcium oxygen
3.sodium oxygen

2007-10-25 10:39:43 · 2 answers · asked by ♥♡❤Abrazos y besitos♥♡❤ 5 in Chemistry

2007-10-25 10:38:08 · 9 answers · asked by karen ♥ 2 in Mathematics

difference quotient = f(x+h) - f(x) / h

find the difference quotient for: f(x) = 3x+2

Thank you in advance for any help you have to offer.

2007-10-25 10:30:01 · 2 answers · asked by snugga_bug 1 in Mathematics

Solve |3x - 6| > 3

x > 3 and x <1
x > 3 or x > 9
x > 3 and x > 9
x > 3 or x < 1
1 < x < 3

2007-10-25 10:29:07 · 4 answers · asked by Anonymous in Mathematics

2007-10-25 10:27:41 · 0 answers · asked by jesse 1 in Earth Sciences & Geology

Solve the following equation

|x+2| = 2

x = 0 or x = -4
x = 0
x = -4
x = 0 and x = 4

2007-10-25 10:27:14 · 6 answers · asked by Marcela M 1 in Mathematics

One mole of nitrogen gas confined within a cylinder by a piston is heated from 0°C to 883°C at 1.00 atm.
(a) Calculate the work of expansion of the gas in joules (1 J = 9.87 10-3 atm·L). Assume all the energy is used to do work.
(b) What would be the temperature change if the gas were heated with the same amount of energy in a container of fixed volume? (Assume the specific heat capacity of N2 is 1.00 J/g·K.)

2007-10-25 10:27:03 · 2 answers · asked by jake1414 1 in Chemistry

I realize that I know much more about dinosaurs!

2007-10-25 10:25:40 · 5 answers · asked by Anonymous in Earth Sciences & Geology

what makes it do that?

2007-10-25 10:24:46 · 4 answers · asked by Jewel 1 in Astronomy & Space

ok the question is..... A random sample of 25 college students has an average test score of 81.5 with a standard deviation of 10.2. The population of test scores is known to be normally distributed. What is the 95% confidence interval for the mean test score of college students?

I know the equation to find the answer is 81.5+/-2.064 *10.2/sqrt25 but how do i get the 2.064

Thank You

2007-10-25 10:20:18 · 1 answers · asked by pickleporkedweasels 1 in Mathematics

Does it still equal 1 or does it equal 3 or what? can you even do it?

2007-10-25 10:16:09 · 6 answers · asked by Kai 4 in Mathematics

"You commute 56 miles one way to work . The trip to work takes 10 minutes longer than the trip home. Your average speed on the trip home is 8mph faster. What is your average speed on the trip home?"

I'm having trouble figuring this one. Could anyone help me figure out how to do this?

2007-10-25 10:12:15 · 3 answers · asked by blacklabel5261 2 in Mathematics

I 've recently checked out dozens of different zoos websites and the only panda bear i could find was a red panda bear. Where in England can I see real Giant Panda Bear? (I'm talking about the most common Panda Bear, black-and white one).
Taa

2007-10-25 10:11:42 · 8 answers · asked by curious 1 in Zoology

A solution that is 95% ethanol is 190 proof. What is the molarity of ethanol in a vermouth drink, if the vermouth is 36 proof? The density of ethanol is 0.78 g/mL

For 36 proof I figured its 18%. I got an answer of 3.05 M of ethanol, but I'm not sure.

2007-10-25 10:08:48 · 1 answers · asked by plumlove 1 in Chemistry

i left my book at home and i need help on answers to my LRA...Help!!!

2007-10-25 10:06:58 · 2 answers · asked by Jessie t 1 in Botany

(a.) Valence Electrons (b.) Neutrons

2007-10-25 10:04:01 · 3 answers · asked by Anonymous in Chemistry

After reading about the man who found the diamond in Arkansas, i was just wondering where we Californians can go and find something in the way of gemstones in california

2007-10-25 10:03:32 · 1 answers · asked by eyeamanoitall 1 in Earth Sciences & Geology

A manufacturer finds it costs him x^2 +5x +7 dollars to produce x tons of an item. At production levels above 3 tons, he must hire additional workers, and his costs increase by 3(x-3) dollars on his total production. If the price he receives is #13 per ton regardless of how much he manufacturers and if he has a plant capacity of 10 tons, what level of output maximizes profits?

2007-10-25 10:02:56 · 2 answers · asked by wongtongsoup22 2 in Mathematics

I always thought it depended on the mass of the object, but a friend disagrees......

2007-10-25 09:50:07 · 6 answers · asked by space0505 3 in Physics

[(sqrt3)+1] / 1-sqrt3

Can someone please show the steps how this becomes
(4+2sqrt3) / 1-3

I missed this problem on the test because I wasn't sure how to simplify

2007-10-25 09:49:53 · 2 answers · asked by Nicky 2 in Mathematics

For instance, the drop down screen as shown near the end of the sci-fi classic 'The Shape of Things to Come'.

2007-10-25 09:49:51 · 4 answers · asked by eamy_smith 2 in Astronomy & Space

2007-10-25 09:47:36 · 5 answers · asked by Anonymous in Mathematics

those round transparent container

2007-10-25 09:47:22 · 18 answers · asked by Anonymous in Medicine

2007-10-25 09:45:31 · 4 answers · asked by Anonymous in Mathematics

2007-10-25 09:45:00 · 7 answers · asked by Europan 3 in Astronomy & Space

The equation is written:

y = 3(x+2)(x+3)

Here is what I did:

First I factored the equations: x^2 + 3x + 2x + 6
Then I added in the 3 to get: 3x^2 + 15x + 18
Then I got this: 3(x^2 + 5x) + 18
Then I did this: 3(x^2 + 5x + 6.25) + 18

Now I need to factor this part >> (x^2 + 5x + 6.25) << HELP!

2007-10-25 09:43:54 · 1 answers · asked by Anonymous in Mathematics

i'm sure you've all seen and heard of the woman who got maggots in her brain...

http://images.google.com/imgres?imgurl=http://users.qld.chariot.net.au/~sanjo/tn_horse_dog.jpg&imgrefurl=http://www.joelmackey.com/entertainment/shocking/animalcrossbreeds.html&h=305&w=400&sz=30&hl=en&start=52&um=1&tbnid=IskAkeNRcNWw3M:&tbnh=95&tbnw=124&prev=/images%3Fq%3Dtallest%2Bdog%2Bon%2Bearth%26start%3D40%26ndsp%3D20%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DN

how did they get there?!?! and how could you prevent maggots from doing so??? i'm really grossed out right now...

2007-10-25 09:40:34 · 1 answers · asked by Anonymous in Biology

2007-10-25 09:39:41 · 1 answers · asked by Anonymous in Mathematics

2007-10-25 09:39:32 · 1 answers · asked by ~Shy_Girl~ 1 in Botany