Science & Mathematics - 30 December 2006

Given that f(a) = a^3 - ba^2 - 4b^2a + 4b^3. Show that a-2b is a factor of f(a). Find in terms of b the remainder when f(a) is divided by a+b.

2006-12-30 17:26:19 · 6 answers · asked by Anonymous in Mathematics

2006-12-30 17:24:28 · 29 answers · asked by Anonymous in Astronomy & Space

I must calculate probability of F-ratio to compare signifiance (P<0.05). A large F-ratio signifies a "small probability" (lit ex. for F-ratio=0.933 calculated probability it is 0.434, df=3). How I can calculate this probability of F-ratio? It is tabulated? The formula it is preferabe. Thx.

2006-12-30 17:23:26 · 2 answers · asked by raluca_jimmy 1 in Mathematics

2006-12-30 17:22:02 · 6 answers · asked by Rajaram 1 in Mathematics

2006-12-30 17:22:02 · 3 answers · asked by anjan 1 in Botany

Popcorn: What is the best temperature at which to store packages of microwave popcorn to get the smallest number of unpopped kernels?

2006-12-30 17:21:39 · 2 answers · asked by Anonymous in Botany

2006-12-30 17:20:57 · 7 answers · asked by Femme Fatale 3 in Other - Science

I made a mistake taking Ibuprofen this evening, I have at other times taken four 200mg tabs at a time for my shoulder problem with a Doctors recommendation. I was at someones house and took four pills there without checking the bottle, assuming they would be 200mg, but they were 400mg each, so i took 1600mg at one time. I took them because i have a very bad cold and sore throat. Just wondering if i need to be worried about taking 1600mg at one time. Feleling foolish for not checking the label, I know better than that usually.

2006-12-30 17:20:44 · 6 answers · asked by rosiek50 1 in Medicine

2006-12-30 17:15:03 · 3 answers · asked by DANILO S 1 in Engineering

A variation of a triathlon competition has a contestant swimming from point A, on one shore of the lake to point C on the opposite parallel shore, then running to the finish, B, futher along the lakeshore. the lake is 4km wide and the finish line ( point B) is 10 km down the lake from the start (POINT A) . If the contestant can swim at 2 km/h and run at 10km/h, determine the point C that will minimize the total time for the race.

2006-12-30 17:14:17 · 2 answers · asked by up_riser 1 in Mathematics

1000 liter of water filled to the capacity of the tank having 1/2 inch outlet at the bottom.

2006-12-30 17:12:07 · 6 answers · asked by RD 2 in Engineering

i dont have a good math teacher haha, hm, is zero rational?

2006-12-30 17:10:10 · 9 answers · asked by hilariouslol 1 in Mathematics

serious answers please.

2006-12-30 17:10:05 · 9 answers · asked by scorplvr09 1 in Astronomy & Space

2006-12-30 17:08:33 · 13 answers · asked by otiscosy 2 in Medicine

How do you determine the value(s) of m in these equations, so that the two roots are equal?:
x^2 - 6m + m=0
And also so that 1 root is triple the other?:
3x^2 - 4x + n=0

2006-12-30 17:07:03 · 5 answers · asked by Alyssa W 1 in Mathematics

or water to acid, i'm not sure if it would cause an actual explosion but i heard depending on how it's mixed the two can become volatile.

2006-12-30 17:02:25 · 10 answers · asked by ........ 3 in Chemistry

If they are different does anyone know a good website site to find generic drug names for Australia as I only have U.K , Philippines and USA resource books a/v here.

2006-12-30 17:00:28 · 4 answers · asked by storm 2 in Medicine

5/ab + 3/b=

1/r - 8/dr=

2/xy^2 + 8/x^2y=

x/6 - 1/3x=

5a/b^2 - 6a/b=

2006-12-30 16:59:41 · 9 answers · asked by koalabear 2 in Mathematics

2006-12-30 16:56:32 · 5 answers · asked by Anonymous in Mathematics

I am having trouble with finding the roots of cubic functions by solving for x on problems with missing parts such as: x^3 - x, and: x^3 - 1,

Can anyone help me?

2006-12-30 16:54:05 · 5 answers · asked by Alyssa W 1 in Mathematics

When I tip the can of air duster upside down and spray, a cold liquid comes out. What if I were to point it in my mouth and drink that liquid?

2006-12-30 16:51:41 · 8 answers · asked by Anonymous in Physics

Yep, I'm asking another molar mass with mass percentage question hehe. These just always get me...

Air is a mixture of many gases. However, in calculating its "molar mass" we need to consider only three major components: nitrogen, oxygen, and argon. Given that one mole of air at sea level is made up of 78.08 percent nitrogen, 20.95 percent oxygen, and 0.97 percent argon, what is the molar mass of air?

2006-12-30 16:49:39 · 5 answers · asked by Luciya 2 in Chemistry

Find the point on the parapolic arc y=x^2, with domain x E [ 0, 1/ k^1/2], that is closest to the point (0,1). Then, find the point on the arc that is most distant from the point (0,1).

2006-12-30 16:48:30 · 5 answers · asked by up_riser 1 in Mathematics

2006-12-30 16:48:10 · 9 answers · asked by Anonymous in Mathematics

pls.. make me conclusions about nature of biology, ecosystem and cell structure and functions... ty in advance... its... URGENT... i need it now.. pls...

2006-12-30 16:47:39 · 2 answers · asked by ~nothing^^~ 2 in Biology

1.Ethylene glycol (antifreeze) and water are completely miscible. If you mix 50 mL ethylene glycol with 50 mL water in a beaker, you will see
-two distinct layers with ethylene glycol on the bottom and water on the top
-two distinct layers with water on the bottom and ethylene glycol on the top
-one homogenous solution
-ethylene glycol droplets floating in water


2.A solution in which an undissolved substance is in equilibrium with the dissolved substance is called a(n)
-dilute solution
-supersaturated solution
-saturated solution
-unsaturated solution


3.Which of the following would not affect the rate of solution of a solid in a liquid?
-heating the solution
-shaking the solution
-grinding up the solid
-increasing the pressure on the solution


4.The formula for a hydronium ion is
-H+
-H3O+
-OH–
-HO+


5.Lewis defined an acid as a(n)
-proton acceptor
-proton donor
-electron pair acceptor
-electron pair donor

2006-12-30 16:44:41 · 2 answers · asked by calebs_baby_girl05 1 in Chemistry

What is cloning and the implication of the technology???

2006-12-30 16:44:14 · 4 answers · asked by lovetwins 1 in Biology

I know it doesn't have snow or rain but does it have differing seasons like the earth as it revolves at different times of the year?

2006-12-30 16:44:07 · 15 answers · asked by Edward J 6 in Astronomy & Space

2006-12-30 16:42:31 · 10 answers · asked by tupidger 1 in Physics

Bigger than gogolplex!

2006-12-30 16:40:32 · 17 answers · asked by Anonymous in Mathematics