Science & Mathematics - 4 January 2007

solve 3/4r-1/2= 1 1/4r+8s for r - it's one n one-fourth
solve 3/2k+L^2 =6L2 for k - it's L to the second power
solve 4m-2n^2 = 2m-72 for m - it's 2 n to the second power
solve z^2 =y = 5y for z - z to the second power

thank you sooooooo much

2007-01-04 10:33:52 · 3 answers · asked by bria_conner 1 in Mathematics

2007-01-04 10:32:44 · 4 answers · asked by Sammi S 1 in Mathematics

i wonder what would happen when you switch another human's brain into another if possible, would the person have the other person's memories? IQ?

2007-01-04 10:32:38 · 6 answers · asked by the illest 2 in Medicine

I've searched a lot for the answers to these questions. Can anyone help me find the answers please?
Who discovered vesicles?
What cell contains vesicles? (i think its a human cell =\ not sure)
And what macromolecule is vesicles made of?

Please and Thanks!

2007-01-04 10:31:56 · 3 answers · asked by Him 2 in Biology

how about acid?

2007-01-04 10:31:49 · 8 answers · asked by cwazyjoe 1 in Botany

how do they work?

2007-01-04 10:31:09 · 1 answers · asked by Devynne 2 in Biology

i dont get this. what are some examples of the cells

2007-01-04 10:29:24 · 4 answers · asked by Devynne 2 in Biology

2007-01-04 10:27:55 · 4 answers · asked by Sveta 1 in Astronomy & Space

How come (when theres no clouds) you can always see the moon at night? Does it orbit at the same speed we rotate? Is it never on the other side of the earth? does it always stay on my side? does it always stay the furthest side from the sun? does australia never see the moon at night? someone tell me lol i cant figure it out!

2007-01-04 10:27:42 · 8 answers · asked by Winnston 1 in Astronomy & Space

2007-01-04 10:27:40 · 3 answers · asked by Nicole S 1 in Mathematics

2007-01-04 10:27:19 · 29 answers · asked by bryanna b 1 in Medicine

2007-01-04 10:27:02 · 8 answers · asked by Anonymous in Mathematics

How many sugar substitutes have been created over the last 25 years? give the list names and chemical structures!!!

2007-01-04 10:25:52 · 4 answers · asked by malutty92 2 in Botany

fungi and plants

2007-01-04 10:25:19 · 2 answers · asked by Anonymous in Botany

The answer is 681.66, but i don't get some of the steps to reach that answer. Can someone explain the steps to me?

A woman stands on a scale in a moving elevator. Her mass is 63.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9500 N. What does the scale read during the acceleration?

2007-01-04 10:24:33 · 5 answers · asked by Rafael 2 in Physics

Dear Y! A, I am too lazy and/or stupid to do my homework. Will Somebody do it for me?
1: Which of the following is a physical property?
A: color
B: density
C: solubility
D: all of the above


2: Which of the following is a chemical property? Mercury:
A: is a silvery metal
B: can form toxic methyl mercury
C: is a liquid at room temperature
D: vaporizes at 357 degrees C


3: Which of the following does not cause a physical change?
A: dissolving sugar in coffee
B: boiling an egg
C: making ice
D: grinding meat


4: Which of the following causes a chemical reaction?
A: boiling water
B: milk going sour
C: engraving a gold coin
D: liquefying nitrogen gas


5: Which of the following take part in determining if a substance is a gas, liquid or solid?
A: temperature
B: pressure to which it is subjected
C: forces holding its basic particles together
D: all of the above

2007-01-04 10:24:29 · 4 answers · asked by Y! Jerk 1 in Chemistry

It seriously scares me...would the universe collapse on itself?

Imagine the possibilities...the horrors, is it even scientifically possible?

2007-01-04 10:23:08 · 18 answers · asked by Anonymous in Other - Science

25% of $119.33
and
10% of $119.33

2007-01-04 10:22:53 · 3 answers · asked by Daraqueen92 1 in Mathematics

2007-01-04 10:21:32 · 6 answers · asked by walrus72 1 in Chemistry

Does anyone remember how to calculate the vertex of a quadratic equation?
I have to answer the following question:

Which is the vertex of the graph of the equation y = -x^2 + 2x + 3

help me please!

2007-01-04 10:21:25 · 5 answers · asked by mkn 2 in Mathematics

True or False? A right triangle with two congruent legs is always a 45-45-90 triangle.

2007-01-04 10:20:12 · 11 answers · asked by JoAnna 2 in Mathematics

(NOTE: The satellite moves in a circular orbit around the Earth at a speed of 4114 m/s and its altitude above the surface of the Earth is 17122000 meters.)

___ hours

2007-01-04 10:19:24 · 1 answers · asked by Anonymous in Physics

2007-01-04 10:18:26 · 1 answers · asked by brad u 1 in Zoology

2007-01-04 10:17:44 · 8 answers · asked by melliemellie23 2 in Engineering

College Algebra... no jokes.

2007-01-04 10:15:55 · 3 answers · asked by girl_pink 1 in Mathematics

Aside from the just-as-outrageously-desperate-and-vague-as-those-gullible-believers explanations that videographers and alledged "experts" seem to always come up with?

Can electormagnitism or Quantum Mechanics somehow offer an explanation

2007-01-04 10:15:10 · 4 answers · asked by Smokey 2 in Physics

2007-01-04 10:14:56 · 2 answers · asked by Robert G 1 in Botany

2007-01-04 10:14:50 · 7 answers · asked by bria_conner 1 in Mathematics

How do you find ratios? Example: 1kg to 250kg, and the ratio of wins to losses in 40 games with 15 losses . I just need to find out how to do it. Thanks

2007-01-04 10:14:28 · 3 answers · asked by gettin it 3 in Mathematics

Athiest acept Jesus Christ as Lord and Saviour?

Scientist find scientific proof of God?

Or aliens from 400 billion light years pay us a visit?

Which will happen first and why?

2007-01-04 10:14:13 · 4 answers · asked by Maurice H 6 in Other - Science