Mathematics - 6 September 2007

Does anyone know what 6(6)*2 x 9= ? This * is a divide sign * or just pretend like it is. this *

2007-09-06 09:38:12 · 5 answers · asked by hotpinkkatharyn 1

Exponential decaying substance decreases by 32% in 10 hours. What is the half life of the substance?

2007-09-06 09:35:55 · 2 answers · asked by TD 1

2007-09-06 09:25:00 · 5 answers · asked by Keith S 1

Counting Numbers - AKA NATURAL NUMBERS. Are represented by 1,2,3...

Zero isnt a counting number. By combining 0 with all the counting numbers you form whole numbers. They are represented by 0,1,2,3...

QUESTION:
Use the set of whole numbers & indicated symbol to fine whole number answers. Please show work.

1.) 4+8=?*
2.) 4-8=?
3.) 4 x 8 =?
4.) 4 divided by 8 =?

* What do I write? Do I write 0,1,2,3,4,5,6,7,8,9,10,11,12?
Or do I write 12 only?

2007-09-06 09:23:39 · 4 answers · asked by Anonymous

Explain

2007-09-06 09:21:24 · 12 answers · asked by brady s 1

The diagram: http://i164.photobucket.com/albums/u32/Codefusionlab/diagram.jpg shows a sector AOB of a circle O and radius r. The angle AOB is α radians, where 0 < α < π. The area of the triangle AOB is half the area of the sector.

(i) Show that α satisfies the equation:
x = 2 sin x.

(ii) Verify by calculation that α lies between π/2 and 2π/3.

(iii) Show that, if a sequence of values given by the iterative formula:
x = 1/3(x + 4 sin x)
converges, then it converges to a root of the equation in part (i).

2007-09-06 09:19:27 · 3 answers · asked by plolol 2

I need help finding an angle using Sine, Cosine, Tangent.

I have a right angle with the opposite side of 3. Adjacent side of 4 and they want me to find the point angle A. What is the formula I can use?

2007-09-06 09:13:59 · 5 answers · asked by Anonymous

Sorry if this sounds like a load of crap but I'm not sure how to put it exactly.
If we could break down all external and internal variables (such as physical actions, e.g. the weather, or mental activity, e.g. a person's unique personality and reaction to events) into mathematical formula, basically obtaining all possible data about an environment and the objects and processes interacting in it, would it be possible to predict exactly the outcome of future events?

2007-09-06 09:11:16 · 5 answers · asked by Anonymous

f(a+h) - f(a)
-------------- <- Formula given in the book
h

Simplify x^2 + 1 (using the above)

Also, what does the F(a+h).... equation mean?

Step by step procedure please :-)

Could someone explain what f(a), f(h) ect mean as well?

2007-09-06 09:08:21 · 2 answers · asked by Anonymous

i'm not that good at math and calenders (dates) ok i made a purchase on 6/04/07 for over $100 and didn't get the extended waranty so they said if something goes wrong i have 90 days to return it,has it been 90 days? thanks.

2007-09-06 09:06:54 · 11 answers · asked by Anonymous

2007-09-06 09:06:27 · 14 answers · asked by ladyblaze30 1

Sorry, I am very confused with this sphere equation stuff =P

2007-09-06 09:05:54 · 2 answers · asked by Anonymous

2007-09-06 09:03:19 · 2 answers · asked by ladyblaze30 1

how do you solve for x?

x/2x-1= b

I'm trying to help someone with this problem and can't get it.
Thanks.

2007-09-06 09:00:16 · 2 answers · asked by RedZebra115 2

a -18 divided by 2....???.....and what is 7.5 + (-2)...i dont gettit!

2007-09-06 08:58:41 · 5 answers · asked by The Miz 3

Intergers !! =(
HELP plz. show work =]

2007-09-06 08:56:41 · 12 answers · asked by Anonymous

2007-09-06 08:52:42 · 11 answers · asked by jessie 1

Hi everyone ,
Can anyone tell me the answer to the answer to this simple equation ? ,
Much appreciated !

2007-09-06 08:52:07 · 11 answers · asked by baaaby♥ 3

does nebody no how to do these problems

3a-4=a+8
2n-5=1/2n+4

2007-09-06 08:50:50 · 5 answers · asked by Anonymous

1/4 [-5+5(-3)]

1/2[6-4^2]

2007-09-06 08:48:49 · 8 answers · asked by Mo 1

x . . . .1
--- = ---
8 . . . .5


If you know how to do this, maybe you could explain. My 14 year old boy does not know how to do these. Thanks!

2007-09-06 08:47:49 · 9 answers · asked by brady s 1

2007-09-06 08:46:11 · 10 answers · asked by turlington999 1

Answer is 2.25mL.. how do you come up with it?

2007-09-06 08:45:52 · 2 answers · asked by ♥ B1tchHere ♥ 4

2007-09-06 08:44:17 · 8 answers · asked by ladyblaze30 1

I'm unsure how to maximize
p=x+2y
subject to:

30x + 20y<=600
.1x +.4y<=4
.2x + .3y<=4.5
x>= 0, y>= 0


any help would be appreciated

2007-09-06 08:42:54 · 7 answers · asked by Anonymous

2007-09-06 08:42:54 · 4 answers · asked by jessie 1

2007-09-06 08:41:55 · 7 answers · asked by jessie 1

2007-09-06 08:40:31 · 9 answers · asked by jessie 1

Imagine you have toothpicks layed out like this:

__ __ __
|__ |__|__|__
............|__|__|

Now only moving two toothpicks, how can you create 4 equal boxes. You can only move two toothpicks, and they cant lay on top of each other, ect. (NOTE: The periods are just so that everything lines up. There have nothing to do with the problem)

After about half an hour working on this, I came up with something, but i think it would count as laying them on top of them. Anyone else come up with something I'm not seeing?

NOTE: This is just a for fun thing, my teacher gave us to work on over the weekend, not for homework or test. Thanks everyone.

2007-09-06 08:39:52 · 2 answers · asked by Anonymous

A spherical balloon is being inflated and the radius of the balloon is increasing at a rate of 3 cm/s.

a)Express the radius r of the balloon as a function of the time t (in seconds). r(t)=?

b) If V is the volume of the balloon as a function of the radius, find V(r(t)).

2007-09-06 08:23:50 · 2 answers · asked by lady_divine@sbcglobal.net 1