Mathematics - 27 August 2006

2006-08-27 06:34:57 · 15 answers · asked by James A 2

at the fair, the chickens and rabbits were placed under the same tent. the chickens and the rabbits have a total of 360 legs. if there were 105 animals, how many rabbits were there?

2006-08-27 06:20:26 · 16 answers · asked by Anonymous

I can see this
Let a = b
multiply both sides by a
=> a*a = a*b
subtract both sides by b*b
=> a*a-b*b = a*b-b*b
=> (a+b)(a-b) = b(a-b)
=> a+b = b
but we asummed a=b
=> 2b = b
=> 2 = 1
Hence Proved.
Is it right or wrong? Guess :)

2006-08-27 05:52:21 · 11 answers · asked by saurabh b 2

Suppose that you take a sequence of 100 numbers and transform them using the discrete fourier transform. You will get 51 complex values which can then be used to compute/plot the power spectrum. If a clear peak is visible in value (say) 20 (=0.2*N), does this mean that there is a periodic element repeated every 20 (in the original sequence) or a periodic element repeated ever 1/0.2=5 (again in the original sequence)??

I can see a visible peak at (say) 0.2*N in the power spectrum, but I am not sure what this tells me about the ORIGINAL sequence. Please explain...

Note: Please do not reply unless you really know this kind of stuff. I have already tried wikipedia and a few other sites and I need a clear and correct explanation.

Thank you!

2006-08-27 05:36:14 · 3 answers · asked by Pepinos 3

Don't answer if you don't know what I'm talking about!

2006-08-27 05:28:44 · 5 answers · asked by fredorgeorgeweasley 4

please send me delails and complete definition.

2006-08-27 04:41:29 · 7 answers · asked by shipra 2

2006-08-27 04:39:05 · 3 answers · asked by wimafrobor 2

2006-08-27 04:34:14 · 10 answers · asked by Anonymous

the problem is:there are 32 students in a class.five eights of the students are girls.How many boys are in the class??

2006-08-27 04:25:42 · 10 answers · asked by Anonymous

2006-08-27 04:20:55 · 9 answers · asked by packiya raj k 1

I have no idea on how to do this, so please respond to thsi question as soon as possible, and thank you to all who help

2006-08-27 04:16:09 · 5 answers · asked by smartyboy 2

this is wat it says:the radius of a circular flower garden is 4 meters.how many meters of edging will be needed ti surround the garden?

2006-08-27 04:07:40 · 12 answers · asked by Anonymous

(i) both? (ii) exactly one policy: (iii) at least one policy?

The probability that a life insurance salesperson following up a magazine lead will make a sale is 30%.

2006-08-27 03:32:46 · 11 answers · asked by wonderbaby 1

2006-08-27 03:11:20 · 20 answers · asked by Anonymous

2006-08-27 02:04:13 · 8 answers · asked by rakesh G 1

step by step

2006-08-27 01:54:55 · 6 answers · asked by thegame1083 1

2x + 2y = 0
y = 4x + 0

2006-08-27 01:03:15 · 11 answers · asked by wvgirl 1

2006-08-27 00:31:52 · 20 answers · asked by mathewstreet_01 1

1) The average of 2 numbers is 70.If the difference between them is 12,what is the smaller number?
2) The average height of 5 boys is 1.15.If one boy is 1m 62cm tall,what is the average height of the other 4 boys?
3) The taxi driver charges $2.60 for the first km and 10 cents per additional 200m.How much must a passenger pay for a journey of 12 km?
4) Find the cost of fencing four sides of a rectangular fielf that measures 12.78m by 10 m at $25 per metre.

Pls tell me how to solve by giving me some formula!!!Thanks

2006-08-27 00:18:52 · 12 answers · asked by Anonymous