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Prove the earth is round 2016-01-30
Kevin pose la question :
Working on a project for a science fair.
To prove the earth is round without the ability to get way above the surface.
How could we set up and experiment to see the curve.
My thought is using a telescope at the beach?
Form what we see so far the curve is 8 inches per mile?
So thought is set up a telescope and a target 1 mile away?

Robert Dawson and Chris Fisher lui répond.
Prove that you cannot factor x squared + 5 2015-05-28
lily pose la question :
the question is: prove that you cannot factor x squared + 5
Robert Dawson lui répond.
Percentage improvement 2010-08-26
shahrukh pose la question :
Hi...

We had a web page that was taking 12 secs to load. Now it loads in 3 secs. What is the percentage of improvement or how much faster is it working now. TO me it looks like it is working 3 times faster or there is a 300% improvement in the loading time. However my client says its ((12-3)/12*)100 = 75% improved. Which seems illogical on the face of it.

Thanks for your help
Shahrukh

Robert Dawson and Chris Fisher lui répond.
Prove A intersect B =X iff A = X and B = X 2010-03-06
Gloria pose la question :
how would you prove A intersect B =X iff A = X and B = X
Tyler Wood lui répond.
Prove that the set of all positive odd integers is an infinite set 2009-06-20
Nazrul pose la question :
How can I prove that the set of all positive odd integers is an infinite set.
Thank you in advance.

Victoria West lui répond.
Percent improvement 2008-06-12
JOHN pose la question :
IF YOU HAD A RATE OF 678/HOUR AND YOUR NEW RATE/HOUR IS NOW 1961 WHAT IS PERCENT OF IMPROVEMENT
Penny Nom lui répond.
The square root of 3 2000-04-04
Mr. William pose la question :
Prove that root 3 is irrational
Harley Weston lui répond.
Percent of improvement 2000-01-30
Steve Quigg pose la question :

In a 1998 survey, 21% polled responded favorably to a question. In 1999, 31% responded favorably.

What is the percent of improvement?


Harley Weston lui répond.
Two algebra problems 1999-12-17
Michael Standfest pose la question :
If x+4 is a factor of 2x4+kx3-3kx2+6x-40, find k

and

Prove that n2-n is even for all n, using the proof of contradiction
Penny Nom lui répond.

 
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