Science & Mathematics - 6 November 2007

2007-11-06 02:38:42 · 2 answers · asked by Raka B 1 in Geography

2007-11-06 02:38:25 · 3 answers · asked by Anonymous in Chemistry

please i need help with these questions: #16 & 18
http://us.f13.yahoofs.com/bc/43dc7fa3med69b7ae/bc/algebra/MA105DE%5B1%5D.Proctored+Exam.050721.pdf?BCosIMHB3UPrKM3b

2007-11-06 02:31:00 · 1 answers · asked by austin 1 in Mathematics

9-(a^2+2ab+b^2)
how do you work that one out?!
I am in calculus, and in algebra, this is the first time I've encountered a problem I couldnt easily do, let alone be stumped!

2007-11-06 02:30:05 · 4 answers · asked by Live to Serve 1 in Mathematics

I can't sleep at night ( I take it in the A.M.), I've put on 15 lbs. because of constant food cravings, and I get dizzy and have constant dry mouth. Plus, I have NO sex drive which is frustrating to both me and my bf. I do, however, feel much less depressed. I'm only on 20 mg. I've been on it for five weeks now. Is it possible these side effects will go away?

2007-11-06 02:28:04 · 3 answers · asked by jessica 2 in Medicine

Required Specifications:
Voltage Gain: > 10
Input Resistance: >100 kΩ
Load Resistance: 100 kΩ
Supply Voltage: 30 V
Output Voltage Swing: > 10 V peak-to-peak
Operating Frequency: 1 kHz

2007-11-06 02:27:57 · 3 answers · asked by Nitin F 1 in Engineering

2007-11-06 02:25:11 · 5 answers · asked by A & A 2 in Geography

2007-11-06 02:25:00 · 6 answers · asked by Donna P 1 in Physics

In chemistry, what is different about the different colors of light (on a light spectrum). How are each color characterized...like, according to elements, or atom emission of light, I don't know. Where can I find any information, I couldn't find any on searchengines!

2007-11-06 02:23:06 · 4 answers · asked by Christina 3 in Chemistry

Would you agree that while microevolution can be seen and proven that macroevolution is based on circumstantial evidence. It cannot be directly proven or seen?

2007-11-06 02:22:16 · 9 answers · asked by Bible warrior 5 in Biology

Square root (2x+3)- square root(x+1) =1


I don't know how to enter square root symbol on the computer, so equation in ( ) is supposed to be under sq rt symbol.

2007-11-06 02:18:20 · 4 answers · asked by fastcatz007 2 in Mathematics

c varies jointly as a and b, and c=84 when a=70 and b=30


What is this asking and how do I go about solving?

2007-11-06 02:13:32 · 1 answers · asked by fastcatz007 2 in Mathematics

1) Find the standard matrix for the linear operator defined by the equations, determine whether the operator is one-to-one.
w_1 = 2x_1 - 3x_2
w_2 = 5x_1 + x_2

2) Show that the range of the linear operator defined by the equations
w_1 = x_1 - 2x_2 + x_3
w_2 = 5x_1 - x_2 +3x_3
w_3 = 4x_1 + x_2 + 2x_3
is not all of R^3, and find a vector that is not in the range.

2007-11-06 02:12:38 · 2 answers · asked by Anonymous in Mathematics

I'm not sure how to describe how linear functions are related to the arithmetic sequence.

2007-11-06 02:08:57 · 1 answers · asked by Anonymous in Mathematics

2007-11-06 02:04:11 · 2 answers · asked by Anonymous in Mathematics

they say potential difference(voltage) is the force given to accelerate the electrons. so what would be the source of voltage and what form of energy it will be.. please help

2007-11-06 02:02:34 · 3 answers · asked by ussamah 1 in Physics

I really dont get this question....can someone please help me step by step?

Q: Ethylene glycol CH2(OH)CH2(OH) is common automobile antifreeze. It is soluble in water and fairly nonvolatile. Calculate the freezing point of a solution containing 651gram of ethylene glycol in 2505gram of water? (molar mass of ethylene glycol is 62.01gram/mole)

A:? help me.

2007-11-06 01:58:22 · 1 answers · asked by Kennedy 1 in Other - Science

find out the numerical coefficient of each term of the following algebraic expression (also plz.explain the solution as i am weak in maths.)
x3-7x2y+5xy2-2

2007-11-06 01:55:20 · 2 answers · asked by Anonymous in Mathematics

2007-11-06 01:52:48 · 2 answers · asked by 3rIn H 2 in Geography

i already have conglomerate which is a sedimentary rock. I need five more and preferably 2 ingneous, 2 metamorphic, and 1 more sedimentary. Thanks

2007-11-06 01:51:55 · 4 answers · asked by Joey A 2 in Earth Sciences & Geology

I just need to check my answers. I'm pretty sure I have them all figured out, but I need to see please.

a) y= x^3*2^x

b) y= ln cubed root(6x+7)

c) y= e^ex ln x

d) y= log_4(x+e^x+e)

e)y= sec(1/sqrt x)

2007-11-06 01:44:16 · 2 answers · asked by Anonymous in Mathematics

2007-11-06 01:43:11 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2007-11-06 01:38:41 · 2 answers · asked by Pero2x 2 in Botany

I knew but I forgot, and I can't find it anywhere.
I believe it strted with a "G."
Thanks for the help.

2007-11-06 01:38:24 · 3 answers · asked by silenceangel7 1 in Zoology

2007-11-06 01:36:19 · 15 answers · asked by ..$$ skunk..$$ 2 in Biology

How did Pythagoras figure out that if you square the legs of a right triangle and add them together you get the length of the hypotenuse squared? (in other words, how did he figure out the Pythagorean theorem?

2007-11-06 01:31:08 · 9 answers · asked by A A 3 in Mathematics

Dear Yahoo Answers,

I need some help with the following Question.

Ammonium carbonate decomposes according to the equation below;

(NH^4)^2CO^3 = CO^2 + H^2O + 2NH^3

If 32 grams of (NH^4)^2CO^3 decomposes calculate;
Atomic weights to use: N = 14, H = 1.0, C = 12, O = 16
a. the mass of NH^3 gas produced

b. the volume of CO^2 produced if measured at STP?



Any contibution will be appreciated.

Thankyou

2007-11-06 01:29:44 · 1 answers · asked by Anonymous in Chemistry

How can you determine if a relationship is a function?
Explain please

2007-11-06 01:29:34 · 3 answers · asked by Anonymous in Mathematics

Determine mass of potassium nitrate that could be obtained as crystals if 100ml and 1 litre of saturated solution of potassium nitrate are allowed to cool from 80oC to 25oC:

2007-11-06 01:23:09 · 2 answers · asked by Anonymous in Chemistry

1. What is the slope of ( y - 3 = 0 ) ?

2007-11-06 01:16:13 · 6 answers · asked by Anonymous in Mathematics