Mathematics - 10 October 2006

Please give me the best math problem you know. Please help.


any help will be appreciated!!

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^_^thanks!

2006-10-10 23:57:05 · 9 answers · asked by kevin! 5

The base of a certain solid is a circular disk with diameter AB of lenght 2a.Find the volume of the solid if each cross section perpendicular to AB is an equilateral triagle? i reall y dont get this


an observatory is shaped like a solid whose base is a circular disk with diameter AB of length 2a.Find thr volume of this solid if the cross section perpendicular to AB is a square? i dont know how to solve it

THANKS

2006-10-10 23:54:23 · 5 answers · asked by jhen_hidaka 1

Addition and subtration of rational expression

2006-10-10 23:53:09 · 5 answers · asked by Darren H 1

This clock has a regular hexagon face. The sum of the numbers along the top side is 24, that is 11+12+1. Rearrange the numbers on the clock so that the sum of the three numbers along any side is 17. Hard? If you got the answer shout it out heh..Let's see how smart you are to work this puzzle^-^

2006-10-10 23:51:01 · 4 answers · asked by Anonymous

A speaker was so boring that one-half of the audience left after a few minutes. Five minutes later, one-third of the remaining audience left. Ten minutes later, one-fourth of those remaining left, leaving only nine people in the audience. How many people were in the audience at the beginning of the lecture?

2006-10-10 23:27:52 · 10 answers · asked by Anonymous

If a circular pizza is cut using only straight cuts and yields seven pieces, what is the minimum number of cuts that are made?

2006-10-10 23:21:42 · 20 answers · asked by Anonymous

2006-10-10 22:19:52 · 7 answers · asked by sreelaxmi c 1

1 is equal to 2, dats rite, watch..
1-1=0 n 2-2=0 so (1-1)=(2-2). ok?
so take common parenthesis.....
1(1-1)=2(1-1)...rite?
eliminate (1-1) on both sides...n whatcha got
1=2.
hee hee this is quite funny rite? any objections?

2006-10-10 22:13:28 · 16 answers · asked by Neo 2

2006-10-10 22:03:35 · 4 answers · asked by sreelaxmi c 1

The size of the bucket is N kb. The bucket fills at the rate of 0.1 kb per millisecond. A programmer sends a program to receiver. There it waits for 10 milliseconds / and response will be back to programmer in 20 millisecond. How many much time the program takes to get a response back to programmer, after it is sent? Ans: 30 millisecond

2006-10-10 21:50:38 · 4 answers · asked by Anonymous

1, 8, 11, 88, 101, 111, 181, 1001, 1111...

what is the next 3 numbers? what is the pattern? i will give 10 points!

2006-10-10 21:18:36 · 5 answers · asked by :) 2

2006-10-10 21:14:38 · 3 answers · asked by sreelaxmi c 1

2006-10-10 21:14:15 · 15 answers · asked by suhpisis 2

Prove that an abelian group with two elements of order 2 must have a subgroup of order 4.

need help with my assignment.
this question is a bit hard, i need a liitle bit of help

2006-10-10 20:36:10 · 3 answers · asked by dsfdsfd f 1

A)DISCUSS THE RESULT.
B)CAN THE CORRELATION BE VALID.COMMENT ON THIS.
C)ASSUMING THE CORRELATION IS VALID SUGGEST SOME WAY OF HOW THE RESULTS CAN BE USED.

2006-10-10 20:00:27 · 3 answers · asked by SAROOP67 1

For example, with the equation; 1+1=x. People claim that simple logic dictates the value of x, which they say is "2". How can we be sure that the logic cited is real and correct?

2006-10-10 19:52:46 · 3 answers · asked by Dan 1

I've been trying to figure out how to do this problem for days and I'm stuck. I've gone to friends and a teacher for help and I'm still stuck. I know what the answers are because I graphed it, but I can't figure out how to solve the problem algebraically. I've tried solving for x, for y and even x^2 but can never solve once I plug in the values. Can anyone help? All the students in my calculus class in college are having trouble with this problem, any ideas? (It's probly obvious but for some reason none of us r seeing how to do the problem.)-
Find all solutions to the system below algebraically:
2x^2 * y = 36
x^2 + y^2 = 13

2006-10-10 19:49:40 · 11 answers · asked by jazzyrhythms 3

2006-10-10 19:46:13 · 3 answers · asked by Jayjay G 1

2006-10-10 19:17:34 · 2 answers · asked by john 3

checking answers, thanks to all answer my questions

2006-10-10 18:52:50 · 4 answers · asked by foster0676@sbcglobal.net 1

please show me the way how it is calculated .i guess the naswer is exp(-pi*f^2) .

2006-10-10 18:37:21 · 2 answers · asked by nima_iran_1985 3

The demand for gasoline can be modeled as a linear function of price. If the price of gasoline is p=$1.10 per gallon, the quantity demanded is q=65 gallons. If the price rises to $1.50 per gallon, the quantity demanded falls to 45 gallons in that period. Find a formula for q in terms of p.

2006-10-10 18:28:21 · 9 answers · asked by Amanda B 2

i need to apply cavalieri's results to obtain that the volume for the solid is 16(pi)/15. the solid comes from an area bounded by y=1 and y=x^2 revolved around the axis y=1.

this is not an integral problem. i need to use cavalieri's methods. i first found the area:

A=2*sum(from 0 to 1) of (x^0) - 2*sum(from 0 to 1) of (x^2) = 4/3.

so then, cavalieri states that a curve rotated about the x-axis has a volume that can be calculated with:

V = (pi)*sum(from 0 to 1) of (x^(2n)) where n is the power of the curve y=x^n. this is the area under the curve rotated about the x-axis.

how do i go about solving for volume? i need 16(pi)/15, but consistently get 4(pi)/5.... any suggestions? thanks.

2006-10-10 18:26:06 · 2 answers · asked by Jesse 2

2006-10-10 18:24:39 · 8 answers · asked by foster0676@sbcglobal.net 1

Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis.
y=0, y= cos(6 x), x = {pi}/{12}, x = 0 about the axis y= -1

is this a washer problem?

2006-10-10 18:18:34 · 3 answers · asked by Theresa C 2

A 2D array is declared as A[9,7] and column wise each element requires 8 byte. If A[ 1,1 ] is stored in 1200. Find the memory of A[8,5] ?

provide me with clear steps plz... important..

2006-10-10 18:16:59 · 4 answers · asked by Anonymous

Let's say you have a number like 12. Would it be true to say there's a zero in the hundreds place? If so, is there a calculation I could perform on the number 12 that would yield 0? What if I had a more complicated number like 121.0021, is there a calculation I could perform on this number that would yield 2 if I wanted to know the digit in the tens place or thousandths place?

2006-10-10 17:53:20 · 2 answers · asked by Kanayo 2

Find the volume of the solid formed by rotating the region enclosed by
y=e^{1 x} + 2, y=0, x=0, x=0.8
about the x-axis.

2006-10-10 17:53:03 · 2 answers · asked by Theresa C 2

Find a Polynomial of degree 4 with the following zeros:1+i, -2-i
I need help with this problem on my math hw.
Thanks

2006-10-10 17:43:26 · 5 answers · asked by Anonymous

2006-10-10 17:38:28 · 5 answers · asked by al-leff a 1