Science & Mathematics - 6 December 2006

I just came from school, and i took a placement test for math collage classes, and im only 13! HAHAHAHA!!!! And i passed!!! Is math 81/82 good?

2006-12-06 11:27:46 · 12 answers · asked by Antonio 1 in Mathematics

2006-12-06 11:27:15 · 2 answers · asked by Manwtf 2 in Mathematics

2006-12-06 11:25:49 · 2 answers · asked by geniusflightnurse 4 in Chemistry

1/(y^2-4)(dx/dy)=y find when x(0)=e and show it's really the answer.

Here is a another differential I would like to see the method of, If I can see how It's done, I think I can finish the HW, I kinda have an Idea, but an example would be awesome.

2006-12-06 11:25:09 · 3 answers · asked by Anonymous in Mathematics

I am trying to calculate equations for a quiz and I am stuck on the equations involving a persons wieght and the medication dosage.

Example:

How many capsules , each containing 250 mg, are needed to provide 50mg/kg/day for 10 days for a person weighing 176 pounds.

I need to know how to calculate this so I can learn to do it on my own. Any help would be great thank you

2006-12-06 11:25:03 · 2 answers · asked by CookFrNW 3 in Medicine

How do they figure out who did a crime from blood evidence?

2006-12-06 11:23:47 · 9 answers · asked by s_bodhi 3 in Biology

2006-12-06 11:22:49 · 4 answers · asked by Porter S 1 in Other - Science

The 225mL flask contains 0.53g o He and 0.105g of Ar.

2006-12-06 11:16:55 · 1 answers · asked by lilballerina2004 1 in Chemistry

I was wondering what the motivation for the definition of matrix multiplication is as it seems somewhat arbitrary. I'm not talking about a row matrix times a rectangular matrix, or a column matrix times another rectangulart matrix. I'm talking about the general case. If there is a theoretical reason for the definition please inform me. If the definition is motivated by something practical it would be nice to know of aswell(noth would be best).

2006-12-06 11:16:33 · 2 answers · asked by Anonymous in Mathematics

1) x^2-8x+15


2) 3x^2-17x+20

2006-12-06 11:15:59 · 6 answers · asked by georgie0515 1 in Mathematics

The cost per square metre of the sides of an open-topped cylindrical tank is twice the cost per square metre of the bottom. Find the most economical proportions for a tank of given volume.
**I dont know how to incorporate the costs...?
**p.s. the answer should be 1:2

2006-12-06 11:15:41 · 2 answers · asked by rachel123go 3 in Mathematics

What would a 50-kg scientific instrument weigh on Titan?
5 N
36 N
70 N
500 N

2006-12-06 11:14:04 · 2 answers · asked by Anonymous in Physics

2006-12-06 11:13:46 · 2 answers · asked by Lovely 2 in Chemistry

How do you drop the all the Mentos into the coke at once without ripping open the packaging (making the Mentos go flying all over the place)? Is there an easy way to do it? it's hard to tell in the videos. Also, does it matter what size bottle you use?

2006-12-06 11:12:49 · 4 answers · asked by Jordan S 2 in Chemistry

Im really stuck on these three questions. Solve for what C would be. 1. F=9/5c+32 Solve for y. 3x+4y=1 Solve. 3. 4/3d-4=1/6

2006-12-06 11:12:28 · 7 answers · asked by steelerxfan 2 in Mathematics

I'm a manufacturing engineer and seem to be the go-to person for technical questions in my office. I don't know the first thing about commercial construction or building codes. I am assuming that accessibility rules are contained in the provincial building codes and enforced by those bodies responsible for them.

But I have a colleague who insists Canadians must abide by the ADA (which sounds like nonsense since American laws don't apply here) and that our new offices do not conform.

Can anyone offer some insight?

2006-12-06 11:11:10 · 3 answers · asked by Mechy 2 in Engineering

2006-12-06 11:09:43 · 5 answers · asked by Anonymous in Physics

What would the attractive force be if they were one-half as far apart?
5 N
10 N
40 N
80 N

2006-12-06 11:08:45 · 5 answers · asked by Anonymous in Physics

What is the correct partial derivative with respect to y for the function f(x,y)=x^2sin(3x)?

I'm thinking it is x^2cos(3x), but I'm not sure.
If you guys could give me any advice I'd reeeeaaalllyy appreciate it
<<>>

2006-12-06 11:08:38 · 5 answers · asked by cheezo12 1 in Mathematics

2006-12-06 11:08:13 · 3 answers · asked by azaleawolf 1 in Chemistry

2006-12-06 11:07:21 · 8 answers · asked by fallingstar 2 in Mathematics

this is my science question on homework

2006-12-06 11:07:00 · 13 answers · asked by GirlyGirl 2 in Chemistry

My elderly aunt passed away and had a large collection of expensive perfumes, however they dont smell good to me. I think they are old.

2006-12-06 11:06:30 · 6 answers · asked by annajriley 1 in Chemistry

trying to prepare for my final, thanks, also i have another Q if you can help.

for what value of X in the interval [-pi/2,pi/2] does the graph y = sqrt[3] x + 2cos[x] have a horizonatal tangent?

2006-12-06 11:06:08 · 2 answers · asked by Anonymous in Mathematics

ive heard several rumors

2006-12-06 11:05:41 · 6 answers · asked by jessekg014 1 in Zoology

2006-12-06 11:04:05 · 5 answers · asked by chris102188 2 in Astronomy & Space

Use a linear equation to find the cost of 25 minute phone call.

2006-12-06 11:03:39 · 3 answers · asked by BMWFAN 2 in Mathematics

I'm in eigth grade and me and my friend want to do a science fair project. We really want to win so if you have any good ideas for projects that will win us the 1st palce (500 dollars) please tell me!

2006-12-06 11:03:31 · 2 answers · asked by Anonymous in Other - Science

2006-12-06 11:02:39 · 6 answers · asked by Danielle T 1 in Earth Sciences & Geology

2006-12-06 11:02:30 · 5 answers · asked by JES 1 in Physics