Mathematics - 13 June 2007

2007-06-13 23:59:18 · 5 answers · asked by Melinda M 1

if i were to make a big square out of all the people in the world, approximately how much space would they(we) occupy? is there a country of this area in which they(we) would fit? assume the people are standing shoulder to shoulder

2007-06-13 23:56:44 · 9 answers · asked by Slevin Kelevra 3

2007-06-13 22:00:02 · 8 answers · asked by karenoliviaperez 1

e^(1+x+x^2) * (1+2x)dx

2007-06-13 21:51:16 · 2 answers · asked by Anonymous

in an acute triangle ABC, if tanA=t-1,tanB=t+1, so what's the value range of t?

2007-06-13 21:17:56 · 3 answers · asked by Anonymous

i dont get like the ^ sign and like the * sign. can everyone list all the signs please. NOT JUST THOSE TWO. all the signs that are used on the computer for solving problems.

2007-06-13 21:09:16 · 3 answers · asked by МɨҞҾ 3

In a problem I'm doing it says that 1-sin^2(x) = cos^2(x)

can anyne tell me why this is/where it comes from?
thanks

2007-06-13 21:01:52 · 6 answers · asked by Anonymous

Compute the slope of a line that contains the points (2, 5) and (9, 3).

A. -(7/2)
B. -(2/7)
C. 2/7
D. 7/2

2007-06-13 20:53:11 · 5 answers · asked by Anonymous

well michale jackso(mick) asked a question whats 160devide by 3/5 and everyone did like this recipical thing. and i dont get what there doing so can someone tell me STEP BY STEP in WORDS not terms, how you do 160devided by 3/5. remeber show the equation and tell me in words please : ) thyank you smart people

2007-06-13 20:51:13 · 6 answers · asked by МɨҞҾ 3

Find the fluid force on a plate in the shape of an isosceles trapezoid, length 5ft at the top and 9ft at the botto and height of 3ft, situated vertically in a vat of oil with weight density 60ib/ft^3. The top is 2ft below the surface of the oil. Thanks....

2007-06-13 19:57:51 · 4 answers · asked by PETL 1

how to calculate ??.What will be formula??? any one plz help me.........

2007-06-13 19:34:41 · 3 answers · asked by blackindianviper 1

equation: x^2 + y^2 +4x +2y - 20 =0

a) find the center

b)find the radius

c) find the intercepts


please help me, I have a few problems like this, thanks!

2007-06-13 18:50:45 · 7 answers · asked by Anonymous

I'm working on the question y= -1/3 cos 2pix

I found |A| and the period, but I can't figure out how to find the x-intercepts. I thought I had them, but apparently (0,0) isn't a point on the graph.

I'm not using a graphing calculator and don't expect this to be solved - I'd just like the steps so I can figure it out on my own! :D

2007-06-13 18:38:57 · 3 answers · asked by Jocelyn 3

It looks right visually but I wonder how to prove it. (Don't worry, I'm no longer in school so it's not a homework problem. I just really miss math.)

2007-06-13 18:13:39 · 11 answers · asked by presidentrichardnixon 3

2007-06-13 18:12:43 · 7 answers · asked by Anonymous

2007-06-13 18:05:00 · 9 answers · asked by CHARLES M 1

please help me...

2007-06-13 18:00:21 · 1 answers · asked by E 1

Find Power Series and determine the Interval of Convergence

g(x)=3x/(x^2+x-2) , c=0
- after doing partial fractions and getting the form into a/1-r and finding endpoints, then combining both and I got the Interval of Convergence to be (-1,1) is that right?

f(x)=1/2-x ,c=5
- I tried this 1 way but the book did it another way and got a diff. answer so can someone work this ?

Use the Power Series 1/1+x = E (-1)^n*x^n to determine a power series , c=0. Identify Interval of Converg.

f(x)=1/(x+1)^2 = d/dx [1/x+1]
- I dont get how to do this

f(x)=ln(x+1) = S 1/x+1 dx
- this one either

2007-06-13 17:33:52 · 1 answers · asked by fcb1012 2

If f(x) = 2x + 3 and g(x) = 3x + 5 then (f ^-1 - g ^-1)(5) equals...??

2007-06-13 17:27:24 · 2 answers · asked by Genius star ;) 2

The inverse of the function f(x)= (x + 3)2 is...??

and what is the reason?

2007-06-13 17:17:17 · 5 answers · asked by Genius star ;) 2

2007-06-13 17:06:56 · 5 answers · asked by Anonymous

How will I find P(10, 4)? That is a probability problem right?

2007-06-13 17:02:54 · 4 answers · asked by Jack Shmit 2

2007-06-13 17:00:10 · 9 answers · asked by Anonymous

2007-06-13 16:53:52 · 12 answers · asked by michael 1

What is surface area and lateral surface area? What's the difference and how do you find them?

2007-06-13 16:48:47 · 3 answers · asked by Thang L 1

I only have the length of the sides, how can I find the area with just this information??

2007-06-13 16:43:40 · 6 answers · asked by Anonymous

I was never good in math... How do I calculate what my final mark would be in a class? Our first exam was worth 35%, participation worth 20%, and final exam worth 45%.
Can someone show me the formula please? Thanks!

2007-06-13 16:32:55 · 13 answers · asked by Stilettos 2

x – 2y = 8
x + y = –1

2007-06-13 16:27:47 · 2 answers · asked by devoric i 1

Assume the Earth is a perfect sphere with a radius of exactly 4,000 miles. 100 points are randomly selected on the surface. What is the probability that no two points are within 100 miles of each other?

2007-06-13 16:21:41 · 4 answers · asked by Anonymous

Does anyone know the easiest way to solve implicit derivative problems. I took Cal last year and I don't remember it being this hard. If I remember correctly, all you have to do is put y' after every derivative. Is this correct?

2007-06-13 16:20:47 · 2 answers · asked by Anonymous