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Mathematics - 18 December 2007

[Selected]: All categories Science & Mathematics Mathematics

How do u make 2 divided by 3 into a fraction

2007-12-18 23:46:06 · 5 answers · asked by Wane B 1

I say it isn't possible....is it?

2007-12-18 23:19:08 · 4 answers · asked by Anonymous

If I obtain a p value of exactly 0.05, is that generally considered to be significant? Or does it have to be less than 0.05? My accepted p value is p < 0.05 but someone told me that p=0.05 is also significant.

2007-12-18 23:00:22 · 4 answers · asked by bunnyrabbit22 1

hey, whats the HL theory? i kinda fell in sleep during geo class when my teacher was teaching this and theres a test on this tomorrow. i know it has to do something with the right angle.

2007-12-18 22:53:02 · 3 answers · asked by jason t 1

2007-12-18 21:48:59 · 4 answers · asked by Leona B 1

I just can't figure out how much this is. I only saw this from a certain website. I think it's British English but I'm greatly used with the American English. This is just like when you say it's 40 hundred when it really means 4 thousand. Please help me with this. I really need to know ASAP. Thx y'all ^_^

2007-12-18 21:48:05 · 6 answers · asked by Anonymous

2007-12-18 20:42:46 · 6 answers · asked by Some One 4

Hi, I really need help on this question.
----------
Let f:R->R be a continuous function such that f(x)>0 for all x in R, and lim[x->∞] f(x)=0=lim[x->-∞] f(x).

Prove that there exists a real number c>0 such that
f(R)=(0,c]
------
Thank you so much

2007-12-18 20:38:45 · 1 answers · asked by Theodore E 1

and what are the critical numbers?

2007-12-18 20:07:40 · 2 answers · asked by Anonymous

Simplify to a trig function of a single angle

sin (pi/6 + x) + sin (pi/6 - x)

x = thadah

2007-12-18 19:52:03 · 3 answers · asked by soob321 2

Mathematics

2007-12-18 19:46:40 · 1 answers · asked by Anonymous

how do you solve for x?

5^x=4^x+3

2007-12-18 18:47:06 · 3 answers · asked by Anonymous

2007-12-18 18:37:07 · 3 answers · asked by fatcat33456 1

300 people have voted between 1 and 5, and the average of the votes is 4.83

How can I figure out the power of one vote? I understand that the value will change, depending on the number of votes. To make it simpler, how can I easily figure out the value of the 301st vote? For example, if my 301st vote is a 1, 2, 3, 4 or 5 .. to easily figure out how much that will change my average.

I can figure it out, but think there must be a formula I can put together to make it quicker.

Right now I'm multiplying the # of votes I have by my current average (so 300 * 4.83) , then adding to it what my next vote would be (1, 2, 3, 4 or 5) , then dividing the result by 301. Is that the easiest way to do it?

It would be nice to put together a formula where i can input the # of votes (V), my current average (A) and the amount of my next vote (?) and get a result of my new average

2007-12-18 17:57:04 · 3 answers · asked by Dustin Gardener 2

2007-12-18 17:43:14 · 1 answers · asked by fatcat33456 1

Calculus question!?
Water is leaking out of an inverted conical tank at a rate of 10,000 cm^3/min at the same time that water is being pumped into the tank at a constant rate. The tank has height of 6m and the diameter at the top is 4m. If the water level is rising at a rate of 20cm/min when the height of the water is 2m (200cm), find the rate at which water is being pumped into the tank.
Volume of cone=(pi*r^2 *h)/3

2007-12-18 17:28:09 · 4 answers · asked by smarties 6

2007-12-18 17:22:25 · 7 answers · asked by Cindy C 2

(6.7x10^-5)(1.2x10^10)^2
-----------------------------------
(8.1x10^-3)^11(2.5x10^2)
the anwser is 3.9x10^36 but i cant arrive at the anwser because i dont get what to do with the exponents on the outside of the brakets. thanks

2007-12-18 17:20:51 · 2 answers · asked by Anonymous

What kind of tringle would each of these be? I really don't understand and need help!

Equilateral, Isosceles, or Scalene?

1. Perimeter = 22. AB = 5x - 12. BC = 3x - 5. AC = x + 3.

2. Perimeter = 41. AB = 2x - 14. BC = 10 + x. AC = 5 + x.

2007-12-18 17:09:16 · 6 answers · asked by ~♥♥♥~ 3

I dont get this

2007-12-18 17:00:48 · 10 answers · asked by Mel 1

Let's say we have two gamma distributions X~G(a,b) Y~(c,d)

What's the distribution of X+Y?

2007-12-18 16:59:49 · 2 answers · asked by Juxtaposer 2

If you increse three times a certain number by 4, the square root of the result is 11, find the number.

2007-12-18 16:59:29 · 4 answers · asked by Herk Kulease 1

Here are some problems I'm having help with:
1. Use natural logarithms to solve each equation or inequality.
a. 24 b. 15e^x>200

2. Solve each equation
a. log base x of 81=4.
b. log base 2 of x=1/3 log base 2 of 27

3. solve each equation or inequality
a. 4^x=6^(x+2)
b.(1/4)^3x<6^(x-2)

2007-12-18 16:58:27 · 3 answers · asked by Raquel - 3

the problem is

(2,-1) (5,3)

i need to know the steps!

help!

2007-12-18 16:38:13 · 9 answers · asked by soouul 1

b) 3t^2 - 8t +4/6t^2 - 4t

2007-12-18 16:34:37 · 2 answers · asked by F F 1

Can you help me with this calculus problem?
Oil Depletion, Suppose the amount of oil pumped from one of the canyon wells in Whittier, California, decreases at the continuous rate of 10% per year. When will the well's output fall to one-fifth of its present level?

2007-12-18 16:15:19 · 4 answers · asked by Anonymous

This is a calculus problem. Please help me because I am trying for two days and couln't solve this problem.

First Order Chemical Reactions, In some chemical reactions the rate at which the amount of a substance changed with time is proportional to the amount present. For the change of glucono lactone into gluconic acid, for example,
(dy/dt) = -0.6y
when y is measured in grams and t is measured in hours. If there are 100 grams of a glucono lactone present when t = 0, how many grams will be left after the first hour?

2007-12-18 16:10:51 · 3 answers · asked by Anonymous