Mathematics - 29 November 2007

2007-11-29 10:37:14 · 4 answers · asked by Anonymous

the problem is:
x^2+x^3+x^4/x^-2+x^-3+x^-4

2007-11-29 10:32:47 · 5 answers · asked by Tyler F 1

2007-11-29 10:24:19 · 2 answers · asked by Chuck B 2

THIS ONE HAS MY HEAD SPINNING, HELP PLEASE!
a. x^2 + 4 = 0

b. x^2 - 4x + 4 = 0

c. x^2 - 4 = 0

2007-11-29 10:16:40 · 9 answers · asked by ♥ ღAngelicaღ♥ 2

a. 13.5

b. 13

c. 12.943

2007-11-29 10:14:45 · 11 answers · asked by ♥ ღAngelicaღ♥ 2

AND WHICH IS THE ANSWER.. (I'LL MAKE IT EASY)

a. x = 0 x = 1 x = 3 x = 8

b. x= 8 x = -8

c. x = 4i x = -4i x= 2 x= -2

2007-11-29 10:13:51 · 2 answers · asked by ♥ ღAngelicaღ♥ 2

if you have the answer tell me lol :)

2007-11-29 10:12:53 · 5 answers · asked by danielle' 1

19 14
__ - __
20 20


???

2007-11-29 10:12:48 · 8 answers · asked by Anonymous

so what part of a centimeter is one millimeter?

i need help thanks :]

2007-11-29 10:12:00 · 6 answers · asked by Anonymous

take graph of y=cosx on interval [0, pi/2]. create 4 rectangle at exact values to determine area between the graph of y=cosx and x-axis.

2007-11-29 10:06:57 · 3 answers · asked by cutiegirl427 2

2007-11-29 10:03:25 · 2 answers · asked by Tori 3

2007-11-29 10:02:55 · 7 answers · asked by Lily Amanda 1

Given x2 - 10x = 20. If completing the square was used to solve this equation, how much should be added to both sides of the equation?

2007-11-29 10:00:28 · 6 answers · asked by Anonymous

and this one please... Thanks!
x2-9x=0

2007-11-29 09:58:51 · 2 answers · asked by Anonymous

(3-i)(3+i)

(-6i)(4i)

I know it seems grade school but I really need help doing this!

2007-11-29 09:58:04 · 6 answers · asked by Anonymous

2007-11-29 09:57:45 · 5 answers · asked by Christina C 1

The Morrison's car uses one gallon of gasoline for every 28 miles. If gasoline costs $1.50 per gallon, how many miles can they drive if they spend $24.00 on gasoline?

2007-11-29 09:49:54 · 7 answers · asked by Anonymous

Find the angle between the hands of a clock at 6:33

How would I do this?

2007-11-29 09:45:23 · 4 answers · asked by Anonymous

2007-11-29 09:41:59 · 4 answers · asked by Trone M 1

Can someone help.
If the Marginal Distribution of X is
x 0 1 2 3
P(x) 1/6 2/6 2/6 1/6

AND
The Marginal Distribution function of Y is
y 0 1 2
p(y) 1/4 2/4 1/4

Find the correlation coefficient.

2007-11-29 09:34:21 · 2 answers · asked by shikmatic 1

Can the total number of distinct Sudoku puzzles be calculated? Any experts in math stat here? How in the world would you calculate this? I was a math major many years ago, but I can't quite figure it out. Please post the solution if you can.

2007-11-29 09:29:21 · 0 answers · asked by Shaun Super 2

2007-11-29 09:27:18 · 0 answers · asked by joey 2

Here is the question
Find the point where the curves y=x3-3x+4 and y=3(x2-x) are tangent to each other, that is, have a common tangent line.

2007-11-29 09:26:32 · 3 answers · asked by Anonymous

What would this equal?

a x a^2 (the "x" being a multiplication sign)

does it just equal a^2 or is it 2a^2?

2007-11-29 09:26:03 · 8 answers · asked by wild boar 4

find all integers n so that the equation nx-12=3x has an integer solution for x

the second 1:
find the difference between the sum of the first 2003 even countin numbrs and the sum of the first 2003 odd countin numbers

yay!

2007-11-29 09:24:09 · 2 answers · asked by Hannah J 1

I wanted to find out the integral of sin(x)/x from negative infinity to infinity so I asked my physics/calculus teacher, who told me that it was equal to pi or pi/2, I can't remember which. Neither of us were able to prove it so I decided to use the fact that rect(f) is the fourier transform of sinc(t) but upon evaluating this at f = 0 I wound up with the answer that the integral is the square root of pi/2 ! Help please?

2007-11-29 09:18:39 · 1 answers · asked by Adrian H 1

2007-11-29 09:18:30 · 3 answers · asked by Anonymous

Bscally i can show that the best rectangle to get the most area from same perimeter is square.also trying to find one that i can use to apply to all shapes (to decgon wil do) to show that the regular ones get the biggest area for the same perimeter and iv got something below that ur spsd to b able to use on other shapes PLZ SHOW HOW.

(Rectangle)
Perimeter=P let a Length=X Then a width is 1/2(P-2X)

Area= X ((1/2 (P-2X)
= X ( P/2-X)
= PX/2-X^2

HERE IS THE IMPORTANT BIT BELOW PLZ HELP!!!!!!

dA/dx = P/2 - 2x = 0 for max or min <<<<< So 2x = P/2 and x = P/4. - I understand how to get from the above but i dont understand the dA/dx thing

please explain, iv luked at some others and they talk about derivates or something and going from 100-2X to 100X-X^2 + C where C is a constant.

But i dont understand how theyve got to there and how on example earlier they got to that either.

ALL HELP GR8ly APPRECIATED

2007-11-29 09:15:38 · 2 answers · asked by JonI 2

Bscally i can show that the best rectangle to get the most area from same perimeter is square.also trying to find one that i can use to apply to all shapes (to decgon wil do) to show that the regular ones get the biggest area for the same perimeter and iv got something below that ur spsd to b able to use on other shapes PLZ SHOW HOW.

(Rectangle)
Perimeter=P let a Length=X Then a width is 1/2(P-2X)

Area= X ((1/2 (P-2X)
= X ( P/2-X)
= PX/2-X^2

HERE IS THE IMPORTANT BIT BELOW PLZ HELP!!!!!!

dA/dx = P/2 - 2x = 0 for max or min <<<<< So 2x = P/2 and x = P/4. - I understand how to get from the above but i dont understand the dA/dx thing

please explain, iv luked at some others and they talk about derivates or something and going from 100-2X to 100X-X^2 + C where C is a constant.

But i dont understand how theyve got to there and how on example earlier they got to that either.

ALL HELP GR8ly APPRECIATED

2007-11-29 09:15:18 · 2 answers · asked by JonI 2

" What number comes next in the pattern" 1000,200,40,8,___"

Please help me!!

2007-11-29 09:14:31 · 7 answers · asked by mini me 2