Mathematics - 20 November 2007

2007-11-20 03:58:14 · 6 answers · asked by foxboi75 1

At the age of eight, after correcting a school teacher's math blunder, the irritated teacher decided to humiliate Pascal and gave him this problem. "Take 1, add it to 2, then 3, then 4 on and on to 9,999." Mathematically it could be written: 1+2+3...+9999=?. Within seconds Pascal solved the problem in his head and spit out the answer, having had a brilliant insight. Can you do it in your head too? There's no way I can tell if you are cheating or not, but first right answer gets the prize!

2007-11-20 03:29:24 · 5 answers · asked by Anonymous

show wrk plz

2007-11-20 03:11:00 · 7 answers · asked by Anonymous

please show ur work :)

2007-11-20 03:09:00 · 32 answers · asked by Anonymous

Consider 5 points, A, B, C, D, and E such that ABCD is a parallelogram and BCED is a cyclic quadrilateral. Let l be a line passing through A. Suppose that l intersects the interior of the segment DC at F and intersects line BC at G. Suppose also that EF = EG = EC. Prove that l is the bisector of angle DAB.

2007-11-20 03:08:39 · 1 answers · asked by Isaac Proff 1

what is limit as n--> infinity of n[(n+1)^0.5 - (n^0.5)] ^2

2007-11-20 02:54:26 · 4 answers · asked by dposters 1

Hi.

I'm solving equations where I'm asked to first of all clear out any fractions or decimals, I already know how to clear out fractions, you just multiply by by the Least Common. Denominator. But how can I clear out decimals.
let's say

05x+0.3y+0.7z=10
0.2x+0.4y+0.5z= 10

in this example or in any example how can you clear out decimals?
thank you.

2007-11-20 02:50:25 · 4 answers · asked by Anonymous

hello, I'm trying to do systems in math, but I don't know where to find the "comma" on the calculator. It's extremely necessary that I find out how to add the comma in to my ordered pairs so I can graph them. =/
Help?

2007-11-20 02:42:45 · 4 answers · asked by justagirl 2

2007-11-20 02:39:51 · 3 answers · asked by Anonymous

2007-11-20 02:36:36 · 1 answers · asked by Anonymous

...and tell me if y is or is not a function of x?

http://i6.tinypic.com/8bhphjr.jpg

2007-11-20 02:26:17 · 3 answers · asked by starscream 1

2007-11-20 02:17:33 · 2 answers · asked by Anonymous

I know that 1 tube of caulking is 10.3 oz. I also know that when you push a bead out that is 1/4" x 1/4" the 10.3 oz. tube will lay down 24.4 linear feet of caulking. I need to put this in a formula to calculate different beads of caulking. Bead height will always match width. Thanks.

2007-11-20 02:04:31 · 1 answers · asked by Anonymous

Whats the answer and please show
work

2007-11-20 02:02:06 · 17 answers · asked by Vincent P 1

a.)8/5=2/x
b.)5/x=22/9
c.)x/4=12/17

2007-11-20 01:58:27 · 3 answers · asked by ramirez 1

2/5=z-12/z-9

2007-11-20 01:39:40 · 14 answers · asked by ann m 1

9/y+2-5/y-2=4/y^2-4

2007-11-20 01:37:38 · 4 answers · asked by ann m 1

A) Find the constant term that hsould be added to make the following expression a perfect-square trinomial: x^2-2x

B)Find the axis of symmetry:y=-x^2+4x-6

C) Find the x-intercepts:y=x^2+4x

2007-11-20 00:24:38 · 7 answers · asked by chas_lynn2002 2

I need it for my report in Math..... I'm just confused.......

2007-11-20 00:09:55 · 3 answers · asked by Anonymous