Science & Mathematics - 23 September 2006

2006-09-23 16:14:44 · 2 answers · asked by Anonymous in Chemistry

hi i need help on how to find the y-intercept of a line. i used to know how to do this but forgot.
one of the problem question is: find y-intercept of line with points : (-5,2) and (8,2)
i have this so far:
y= -5/13 x + b
if you can re-teach me that would be great.

2006-09-23 16:13:54 · 9 answers · asked by krawnikfasho 1 in Mathematics

The three elements of the formula are resistance, voltage, and amperage. When two of the values are known, the formula allows you calculate the unknown value.

2006-09-23 16:13:21 · 8 answers · asked by Anonymous in Engineering

2006-09-23 16:11:45 · 7 answers · asked by silentcargo 3 in Biology

2006-09-23 16:11:13 · 4 answers · asked by Patty 3 in Botany

Just a question

2006-09-23 16:10:41 · 11 answers · asked by BurntBeneathSun♥ 4 in Weather

If one star is 40 times brighter than another star, how magnitude brighter is it?

If two stars differ by 7 magnitudes, what is their intensity ratio?

2006-09-23 16:07:42 · 5 answers · asked by hiddenpedals 2 in Astronomy & Space

A ball is thown from a point 1.0 m above the ground. the initial velociy is 19.6 m/s at an angle of 30.0 above the horizontal.

What is the maximum height of the ball above the ground?
What is the speed of the ball at its highest point in the tragectory?

2006-09-23 16:02:38 · 2 answers · asked by Trevor M 1 in Physics

2006-09-23 16:01:20 · 7 answers · asked by Anonymous in Mathematics

what would it take to make it last forever?

2006-09-23 16:00:11 · 7 answers · asked by Anonymous in Chemistry

2006-09-23 15:57:59 · 3 answers · asked by katie 1 in Earth Sciences & Geology

2006-09-23 15:56:25 · 9 answers · asked by vaishnavi 1 in Mathematics

2006-09-23 15:56:12 · 16 answers · asked by Anonymous in Other - Science

I am trying to help a 5th grader with her homework and I am having trouble with number patterns.

2006-09-23 15:53:04 · 12 answers · asked by bobbie b 1 in Mathematics

fun at my job...

2006-09-23 15:52:31 · 8 answers · asked by turtle girl 7 in Medicine

what is an example of a human/enviroment interaction??

2006-09-23 15:49:36 · 4 answers · asked by vs 3 in Geography

This indefinite integral comes from the differential equation
x*y'' = y' + [y']^3. The problem is that my professor told me a way of solving it, but there is a problem with his method though.

OK, now: The first thing is the reduction of order in the differential equation.

If you make the following changes: y' = p AND y'' = (dp/dx)p, what you obtain is x*p(dp/dx) = p +(p^3). If you separate variables, solve for p, then revert the changes and solve for y, you derive my question. BUT, according to the book of Simmons, the answer is C1^2 = x^2 + [y - C2^2]^2, but I do not believe that solving the antiderivative I'll manage to get that!!!

The funny thing is that you DO solve the equation and get the answer if you make the changes: y' = p AND y'' = dp/dx... hahahaha, oh damn!, sorry I have already figured out my mistake, I applied another method. But I would really appreciate if someone could solve the initial question please (the antiderivative).

Thanx!!

2006-09-23 15:46:10 · 2 answers · asked by Anonymous in Mathematics

If the numbers after the decimals don't stop anywhere (like the square root of 2), than its not exact is it?

2006-09-23 15:42:23 · 8 answers · asked by Bob 3 in Mathematics

2006-09-23 15:42:13 · 5 answers · asked by Nessa 1 in Physics

2006-09-23 15:30:56 · 3 answers · asked by Gideon 1 in Earth Sciences & Geology

this is a serious question, i really want to know.

2006-09-23 15:28:50 · 19 answers · asked by jay_hargrave@sbcglobal.net 1 in Medicine

2006-09-23 15:28:12 · 7 answers · asked by francine 1 in Chemistry

2006-09-23 15:23:25 · 3 answers · asked by francine 1 in Other - Science

Where i live, the wind is stronger during spring & summer. That ruins the sunny days :(

2006-09-23 15:20:28 · 4 answers · asked by Philidor 5 in Geography

Roberta went to spend her tickets at the local arcade the other day, she wanted to start a collection of small plastic animals. The plastic animals cost 28 tickets each.

However, she got it in her head that, for good luck, the total amount of tickets she must spend must be a number where all of the digits are the same.

With that in mind, what is the minimum number of ANIMALS she must buy?



*hint* Find out how many tickets she must spend, then divide it by 28. The amount of tickets will be high. *hint*

I will be suprised to see how many people can figure this out.

2006-09-23 15:19:08 · 15 answers · asked by Ari 2 in Mathematics

2006-09-23 15:14:55 · 14 answers · asked by Anonymous in Astronomy & Space

2006-09-23 15:13:58 · 7 answers · asked by Anonymous in Physics

thanx for help on my other chemistry question!

2006-09-23 15:09:35 · 8 answers · asked by hawaiihg 2 in Chemistry

The Moon rises in the east and sets in the west, just like the Sun does, only at different times (depending on the phase of the Moon). But when I ask this question of my students, some will say the Moon is always up. I see this so much, even after instruction, that I'm beginning to think "up" means something different to them than it does to me! To me, "up" means above the horizon - the Sun is up during the day, but it is not up at night. So what does "up" mean to you?

2006-09-23 15:02:06 · 14 answers · asked by kris 6 in Astronomy & Space

that would help me with my geometry homework. i suck at it so bad i need some sort of online tutoring site! please help!

2006-09-23 14:50:20 · 3 answers · asked by alexa 1 in Mathematics