Science & Mathematics - 31 August 2007

There are 3 apparently...

2007-08-31 20:20:22 · 20 answers · asked by The Desertflyer 2 in Geography

Alright, quick background... This problem is a "look back" for my Calculus class & for some reason, I cannot figure out where to go...

Question:
"A cattle rancher has 2300 feet of fencing that will be used to enclose a rectangular feed lot. If one of the dimensions of the feed lot is x , find a formula for the area y of the feed lot (in square feet) as a function of x."

My proposed Answer (not yet complete, but this is what i have so far)
2x+2y=2300
x+y=1150
x*y= ?

now what??

Please help! Thank you!

2007-08-31 20:18:46 · 8 answers · asked by Sum Girl 4 in Mathematics

2007-08-31 20:10:09 · 6 answers · asked by basta 1 in Mathematics

2007-08-31 20:02:31 · 6 answers · asked by Anonymous in Chemistry

I was thinking maybe some russian city but this question has been bugging me for weeks... maybe a kazikstand city?
By Isolated i mean the city of 1 million that is farthest away from any other city with 1million

2007-08-31 19:47:33 · 4 answers · asked by Mark 2 in Geography

u send me what rating of power factor plant for 1000kva transformer

2007-08-31 19:44:53 · 2 answers · asked by Anonymous in Engineering

Hawaii is growing thanks to volcanic activity but are Alaska or louisiana growing more rapidly through delta growth?
Are there anyother states that have increasing area due to tectonic movement?

2007-08-31 19:44:06 · 4 answers · asked by Mark 2 in Geography

2007-08-31 19:42:37 · 1 answers · asked by Rebecca M 1 in Botany

29-{5+3[8.(10-8)]-50}

now the period is suppose to be a dot in the middle. i couldn't find a key to properly put that, and I know I need to multiply that.

2007-08-31 19:39:59 · 5 answers · asked by msdood1 4 in Mathematics

why?

2007-08-31 19:39:45 · 7 answers · asked by english_improve 3 in Chemistry

I've found in Wikipedia but it doesn't say anything about the theory of operation of the motor. If anyone has or knows, please tell me in a clear way, which is easy to understand.

2007-08-31 19:36:48 · 6 answers · asked by english_improve 3 in Physics

what is the mass of oxygen produced from the decomposition of 75 grams of potassium chlorate?

2KClO3 --> 2KCl + 3O2

thanks in advance

2007-08-31 19:34:31 · 3 answers · asked by Tammy 2 in Chemistry

what are the freezing and boiling points of water in the celsius???

2007-08-31 19:16:14 · 10 answers · asked by Rachel 2 in Chemistry

4.the two most abundant isotopes of carbon are carbon-12 (mass 12 amu) and carbon 13( 13amu). their relative abundances are 98.9% and 1.10%. what is the atomic mass of carbon?

5.element X has two isotopes: X-100 and X-104. if the atomic mass of X is 101 amu, what is the relative abundance of each isotope in nature?

thanks in advance

2007-08-31 19:14:53 · 3 answers · asked by Tammy 2 in Chemistry

for example 2^3+4x^2+x+2
tell me how step by step

thanks in advance

2007-08-31 19:10:41 · 5 answers · asked by ggh 1 in Mathematics

Write the equation of the line passing through each of the given points with the indicated slope. Give your results in slope-intercept form, where possible.
(-1,3) and (4, -2) (2, -3) and (2, 4)

2007-08-31 19:09:34 · 3 answers · asked by Anonymous in Mathematics

no

2007-08-31 19:03:52 · 3 answers · asked by INDU 2 in Zoology

i heard that this thing can be made of red spinach/cabbage i think.

2007-08-31 19:03:34 · 1 answers · asked by Anonymous in Chemistry

2007-08-31 19:03:25 · 3 answers · asked by Anonymous in Geography

4x^2 + 4x + 1

Can it be factored? If so, how?

2007-08-31 19:02:29 · 10 answers · asked by Anonymous in Mathematics

how fast is 500 miles per hour in kilometers per hour?
answer fast dude

2007-08-31 19:01:07 · 10 answers · asked by Rachel 2 in Geography

We've researched the net, and we now have info 'how'. The search results have resulted to different ways-through amylase, enzymes, and even bacteria. But we're having problems on the materials. Can someone give us any info that might help us? There might be a simpler process in which the materials are easier to get (in our area). The materials we need are bacterial amylse sol'n, fungal amylase powder, amyloglucoside sol'n, human salivary sol'n and some potassium phosphate buffers-and we don't have any idea on how to get them, or maybe we have, but it's still hard. We're thinking of buying but it won't be too wise since we only need a little for each. Maybe they can be replaced by some chemicals. Please... give us any info or lead on how to solve this. This problem is stopping us from starting our experiments. The school can't give us anything, there ain't one of the mentioned above in our school labs. Thanks

2007-08-31 18:55:45 · 0 answers · asked by manimefrances 1 in Chemistry

If I travel 8 miles South and 6 miles Southeast and then 100 miles West at the speed of 20mph, and my friend is traveling 14 miles South and 94 miles West at the speed of 15 mph, then will we arrive at the same spot at the same time?

2007-08-31 18:55:24 · 5 answers · asked by Anonymous in Mathematics

It spins the eyepiece around.

2007-08-31 18:53:54 · 4 answers · asked by Nina 2 in Biology

2007-08-31 18:48:47 · 13 answers · asked by ebillar 1 in Mathematics

and south east to Cuero Texas a Chupacabra monster dog type thingy!

2007-08-31 18:46:58 · 7 answers · asked by Faerie loue 5 in Zoology

2007-08-31 18:46:35 · 3 answers · asked by Anonymous in Chemistry

a. what is the mass of silver needed to react with chlorine to produce 84 g of silver chloride?

b. how many liters of carbon monoxide at STP are needed to react with 4.80 g of oxygen gas to produce carbon dioxide?

2007-08-31 18:40:23 · 2 answers · asked by Tammy 2 in Chemistry

true or false. table salt, water, and carbon are compounds?

2007-08-31 18:36:10 · 5 answers · asked by Anonymous in Biology

2007-08-31 18:31:41 · 7 answers · asked by Anonymous in Medicine