Mathematics - 5 July 2006

how to calculate multiplication of 10 digits or more by mind and not by calculator or computers or by physically?

2006-07-05 23:51:20 · 5 answers · asked by Shailesh R 1

My colleague keeps emailing round logic puzzles, and I normally spend several hours beating my head against the wall trying to figure out how many pirates it will take to extinguish 99 lightbulbs in the given time, using only one match and a banana (or something like that).

I wish to take revenge by setting him a really tough logic puzzle. Anyone know any good ones?

2006-07-05 23:39:41 · 7 answers · asked by Anonymous

A^3+B^3=C^3

Rules
A, B, and C cannot be negative, 1, or 0. Good luck!

2006-07-05 22:38:35 · 10 answers · asked by jmanjman47 3

hint: the answers on the back of a t-shirt

2006-07-05 21:27:14 · 13 answers · asked by Anonymous

4x-6(x+8)

2006-07-05 21:20:06 · 22 answers · asked by :) 2

a shop sell a pair of jeans at $50, you ask you mother for $25 and your father for another $50. you go to the shop and they give you $5 discount, you go back home and give your mother $1 back and your father a $1, so you owe your parents $24 each and you have $3 extra. now $24 + $24+$3= $51 how do you get the $1 extra?

trust me there is a solution?

2006-07-05 21:18:18 · 14 answers · asked by motsie 1

2006-07-05 21:00:47 · 5 answers · asked by Googsy 1

I want a software tool to solve Eigenvalue problem. Can anyone help?

2006-07-05 20:27:29 · 4 answers · asked by salehein 1

2006-07-05 19:04:59 · 7 answers · asked by Bonnie B 1

I have been working on this problem for an hour can someone please help.

2006-07-05 19:00:54 · 8 answers · asked by Anonymous

2006-07-05 18:49:28 · 5 answers · asked by albosweetthing 1

2006-07-05 18:42:54 · 6 answers · asked by ? 2

2006-07-05 18:42:18 · 4 answers · asked by albosweetthing 1

let z=r(cos(x)+i*sin(x))
why is 1/z=r(cos(x)-i*sin(x))

2006-07-05 18:24:38 · 4 answers · asked by Anonymous

2006-07-05 18:23:13 · 15 answers · asked by Mark B 1

What in the blue name of jesus is pie? I totally forgot what is pie in Math? What does it meen? Like if I would say what is the "pie" root square of 20 what doe sthat meen?

2006-07-05 18:17:26 · 17 answers · asked by Anonymous

Well im doing some homework and i finished doing the equations, now i need help with the COLLECT LIKE TERMS
part!

2006-07-05 17:49:40 · 5 answers · asked by ChunX 1

I am confused with this problem which is 8x^2 + 1 = 5x. Is the answer -5 - i square root 7/16, -5 + i square root 7/16?

2006-07-05 17:39:26 · 6 answers · asked by Anonymous

Well, i have tons and tons of homework and i just want to get through with my equations homework and my COLLECT LIKE TERMS,
algebra crap. cuz after i finish that i will take geometry tomorrow!

Any Help?

2006-07-05 17:16:11 · 3 answers · asked by ChunX 1

2006-07-05 17:15:19 · 10 answers · asked by Anonymous

I am confused with this problem which is 8x^2 + 1 = 5x. The next step is 8x^2 - 5x = -1, then 8x^2 - 5x/2 + 25/4 = -1 + 25/4, this is were I get confused. Due you find LCD to complete this? Please can some help and explain this problem to me?

2006-07-05 17:14:12 · 4 answers · asked by Anonymous

Hi, today at class the proffesor was talking about quadratic expression and we were using the quadratic formula that is : x equals -b + or - radical b square minus 4ac over 2a.

and one of the student say there is a form of song or rhythm to memorize it... do you know it? its not that i am lazy and can't memorize it, it that she would give 10 points if someone could bring the lyrics....... and 10 points is a lot...

2006-07-05 17:03:06 · 5 answers · asked by a100 1

Simple arithmetic, please help!

2006-07-05 16:38:03 · 11 answers · asked by finleydoo 1

If you insist, I do not want much. Get your checkerboard and place one penny on the first square. Then place two pennies on the next square. Then place four pennies on the third square. Continue this until all 64 squares are covered with pennies.” As he’d been saving pennies for over 25 years, Mr. Brown did not consider this much of an award, but soon realized he made a miscalculation on the amount of money involved.

2006-07-05 16:36:24 · 5 answers · asked by dortaliny75 1

The problem is (5x - 1)^2=16/25
is the answer -4/5, 4/5

2006-07-05 16:31:17 · 6 answers · asked by Anonymous

2006-07-05 15:13:35 · 10 answers · asked by Diane H 1

I have the problem (9-54i)(6-i) with multiply choice answers. The answer I came up with does not match any of the multiply choice answer. The answer I am getting is 54-63i+54i^2 which converts to 54+54(-1)-63i with the answer of -63i. The multiply choice answers are (A) 108+333i (B) 9i (C) 108-333i or (D)-333i. Am I figuring wrong, please someone help!!

2006-07-05 15:07:19 · 11 answers · asked by Anonymous

for examble 0123

2006-07-05 14:42:21 · 12 answers · asked by Anonymous

I want a solid understanding of mathematics - the foundations of it and such, so looking into the development of it all would be a good start I would think. I'm looking for book recommendations and/or website resources on topics such as.. problems that caused parts of math to be developed, history of math.. some good resources on understanding it all. All that make any sense? Can't think of another way to explain it.

2006-07-05 14:21:50 · 7 answers · asked by death0metal 1

2006-07-05 14:12:33 · 4 answers · asked by fiona_0501 1