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How much sand is in a pile? |
2005-04-16 |
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From Larry:
I was wondering if there is a formula for determining how much sand would be in a pile. I am a student in medical school, and this is a bonus question for a test. I hope you can help me.
Answered by Harley Weston. |
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Some four digit numbers |
2005-04-16 |
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From Lori:
can u give me every possible combination of four numbers starting with the number three
Answered by Penny Nom. |
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A roll of paper |
2005-04-16 |
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From Tuomas:
How would you calculate a diameter of a paper reel when the paper is 0,04 millimeters thick and for example 5000 meters of it is winded on a 76 mm (3inch) core.
Answered by Penny Nom. |
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A flaw in a problem |
2005-04-15 |
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From Bryce:
Question:
(x2-x2) = (x2-x2)
x(x-x) = (x+x)(x-x) [divide both sides by (x-x)]
x = x + x
x = 2x [divide both sides by x]
2 = x/x = 1
Where is the flaw in this problem?
Answered by Paul Betts. |
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X and Y intercepts |
2005-04-14 |
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From David:
Hi, i would like to know if you can answer this question for me
Find the x and y intercept fo y = 8x - 5
Answered by Penny. |
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The limit as x approaches 3 of (sqrt(x+1)-2)/(x-3) |
2005-04-14 |
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From Abraham:
What is the limit as x approaches 3 of
(sqrt(x+1)-2)/(x-3)
Answered by Penny. |
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cos(2x) = sin(3x) |
2005-04-14 |
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From A student:
Show that if x= 18 degrees, then cos2x =sin 3x. HENCE find the exact value of sin 18 degrees, and prove that cos 36 - sin 18 =1/2.
Answered by Andrei Volodin, Claude Tardif and Penny Nom. |
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Avec les chiffres 1 3 4 6... |
2005-04-14 |
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From Ambre et Miel:
avec les chiffres 1 3 4 6 utilisé une seule fois chacun soit en div multipl addit ousoustr je dois avoir 24 comme résultat
Answered by Claude Tardif. |
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Prime numbers |
2005-04-11 |
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From Jesule:
Given that p, p+10 and p+14 are prime numbers, find p.
Answered by Claude Tardif and Chris Fisher. |
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A 25% markup |
2005-04-07 |
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From Jason:
I want to markup $2.00 by 25%...How do I do this???
Answered by Penny. |
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The centroid of a triangle |
2005-04-07 |
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From Maria:
Q3)find the coordinates of the centroid of triangle ABC
i want your help here to solve the 3rd question i got stuck.
Answered by Penny Nom. |
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A mixture |
2005-04-06 |
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From Ray:
two known values
product # 1 = 60% protein
product # 2 = 80% protein
How much of the #2 product would I need to add to the # 1 product to
create a third product of 65%
Answered by Penny. |
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Difference in latitude |
2005-04-05 |
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From Gretel:
Assuming the the earth is a sphere of radius 6378 kilometers, what is the difference in latitude of two cities, one of which is 400 kilometers due north of the other? 500 kilometers?
Answered by Penny Nom. |
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Rational functions |
2005-04-05 |
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From Nicole:
My name is Nicole and I am a teacher at Weyburn Comprehensive School. I am currently teaching both Math B30 and Calculus 30 at the school and I have a question about rational functions. I know that if a rational function (by definition) has common factors in the numerator and the denominator then it is not a rational function (math b30) however in calculus this common factor creates a hole in our graph. Can you explain to me why a common factor or constant does not give us a rational function?
Answered by Penny Nom and Leeanne Boehm. |
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1 ellipsoïde et une sphère |
2005-04-04 |
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From Tihon:
Dans le cadre de mon mémoire réalisé à l'université de Liège (Belgique), je suis amené à savoir si 1 ellipsoïde et une sphère ont ou n'ont pas d'intersection...Quelqu'un peut-il m'aider??
Answered by Claude Tardif. |
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