Mathematics - 7 July 2006

Obviously (I think!) one lap of a standard athletics track is only 400m when you are in lane 1, the inside lane, how much further do you travel when doing a lap in lanes 2, 3, 4 etc., one lap being from the main start/finish line back to the main start/finish line i.e. without staggered starts?

2006-07-07 23:50:59 · 12 answers · asked by quanto_questo 1

The area of a triangle with sides a, b and c can be expressed by
A = root{s(s-a)(s-b)(s-c)} with s being half the perimeter.
A beautiful aspect of this formula is, that a, b and c can be exchanged cyclically.
Is there an similar formula for the volume of a tetrahedron with edges a, b, c, d, e en f?
V=Ah/3 is far from sufficient.

2006-07-07 23:19:12 · 2 answers · asked by Thermo 6

What is the usefulness of e? What the background that forced us to define the constant e?

2006-07-07 23:16:27 · 5 answers · asked by K N Swamy 3

therom

2006-07-07 23:03:38 · 6 answers · asked by Anonymous

2006-07-07 22:18:35 · 6 answers · asked by Anonymous

We utilize time as a measurement. It gives us the ability to create a unified point of reference which all of society understands. Other than this, what purpose does time serve?

2006-07-07 21:27:06 · 12 answers · asked by trsquest 1

'A' gets 10 more marks than 'B' and 'B' gets 20 more marks than 'C'.how much % more marks does 'A' gets than 'C'?

2006-07-07 21:26:11 · 8 answers · asked by armor 1

Famous, highly relevant numbers are everywhere.

Square root of 2
Base of Natural Logarithms
Pi

AND THEY ARE IRRATIONAL NUMBERS.

But what about

c = the speed of light.

IS C A RATIONAL NUMBER?

Question by Fhree

2006-07-07 21:22:57 · 21 answers · asked by Anonymous

2006-07-07 20:33:29 · 4 answers · asked by bob S 1

Anyone know how to do this....please show me....I am way stuck

2006-07-07 19:35:16 · 4 answers · asked by itsmetinkrbell 1

1/0=?
0/0=?
what would infinity divided by zero be or for that matter zero divided by infinity

2006-07-07 18:42:38 · 16 answers · asked by Anonymous

2006-07-07 18:33:54 · 9 answers · asked by Anonymous

2006-07-07 18:19:29 · 10 answers · asked by r b 1

2006-07-07 17:39:03 · 13 answers · asked by Anonymous

A crazy question!Can anyone help me to solve this question?

By using De Morgan's Law and other properties of set algebra,prove that

(A'nBnC) U {A' U (BnC')}' = (AnB') U (BnC)

U=Union
n=Intersection
' =Complement

2006-07-07 16:58:36 · 7 answers · asked by Jordan Then 2

1)an area is covered by the curve y=(x)^2 , y = 4 , x = 3 and x axes. calculate the volume when it is rotate 360 degree through
a)the x axes
b)the y axes
c)x = 3

2)an area is covered by the curve y=(x+3)^2 , y = 4 , x = 0 and x axes. calculate the volume when it is rotate 360 degree through
a)x=0
b)y=0
c)x=-3

3)an area is covered by the curve y=(x-3)^2 , y = 4 , x = 0 and x axes. calculate the volume when it is rotate 360 degree through
a)x=0
b)y=0
c)x=3

2006-07-07 16:45:18 · 4 answers · asked by lkamh 2

2006-07-07 16:37:50 · 8 answers · asked by emu egg 1

Is there any pattern to the distribution of prime numbers?

2006-07-07 16:28:55 · 7 answers · asked by lurch9884 1

find the sum of all natural nums between 50 and 500 divisible by 7

2006-07-07 16:27:25 · 5 answers · asked by tale 1

2006-07-07 16:01:15 · 3 answers · asked by guitarkhongday 1

2006-07-07 14:43:52 · 26 answers · asked by guitarkhongday 1

adding 38+24.17 is?

2006-07-07 14:41:29 · 9 answers · asked by Anonymous

u get a water bill that says u used 38,000 gal. and its $1.25 per 1000 galbut they dont bill u at 1,000 they statr billing u at the 100s then its 47.50 but if they charge you like they bill u it would be $4. 75 people listen a 1,000 gallons of water is alot of water believe me u cant use 28,000 38,000 never mind a 1000,000 galoons of water in 6 months time unless uren in a buisness where water is a main contributing factor let me show u say u use 50 gal a day times 30 days a monthe thats 1500 now times 6 months . so thats only 9,000 gallons not 90,000 like they make it out to be . people of america THEY owe us alot of money now weve got just one more thing to figure out and its something ive been wanting toknow all my life JUST WHO IN THE HELL ARE THEY

2006-07-07 14:20:43 · 3 answers · asked by mzswales 2

2006-07-07 14:16:45 · 21 answers · asked by Anonymous

No its not homework, I'm trying to understsand the calculus-based derivation of Pi. By "Pythagoras'" theorm, a circle centred on the origin represents this relationship: y = the function above. By taking strips of the circle from from x = -R to x = +R, the area may be composed. By reducing them towards zero width whilst multiplying towards infinity in number, the area may become accurate. Newtons integration makes the calulation exact. The integrated funtion = pi times R squared, we are told. Can anyone help me to understand how this works please?

2006-07-07 13:51:55 · 8 answers · asked by Anonymous

2006-07-07 13:36:15 · 11 answers · asked by citizenprice 2

2006-07-07 13:29:14 · 3 answers · asked by Anonymous

if they bill by the 100s and charge by the 1000s how much is 38,000 gallons of water if its $1.25 per 1,000 gallons

2006-07-07 13:07:45 · 7 answers · asked by mzswales 2

that contains three blue and two red caps. The men are positioned in indian file in front and facing a wall. The man closest to the wall we shall call A. The second man standing behind A and also facing the wall we will call B, The third man standing behind B and also facing the wall we will call C. Caps are taken out of the box at random and placed on the heads of the three men. Of course, C can not see the color of his cap but can see the caps on A and B. B cannot see his cap nor C's cap but can see A's cap. Finally, A cannot see neither his nor A's and B's cap. C is asked if he knows the color of his hat and, after thinking for a few moments, answers that he doesn't know. Then the same question is asked of B who, after thinking for a few moments also answers that he doesn't know. Finally, A is asked the same question and, after thinking for a few moments, answers correctly. Now, the question is: What is A's cap color and how did he know?

2006-07-07 13:02:47 · 10 answers · asked by Pavi 2

ENRON DONT HAVE NOTHING ON THESE CATS WAKE UP AMERICA OUR WATER BILLS ARE NOTHIN OTHER THAN "FACTS OVERWHELMED BY THE LIES CREATED TO SUPPORT THEM" THEY BILL US BY THE 100,S AND CHARGE US BY THE 1000'S NOW do the math

2006-07-07 12:59:49 · 3 answers · asked by mzswales 2