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Cows, chickens and pigs |
2005-09-10 |
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From Markequetta:
I was asked a question by a friend who refuses to give the right answer to a question that I answered wrong. So if you can help me that would be great! The level of my question is secondary I believe.
Question:
Cows cost: $10
Chickens cost: $0.50
Pigs cost: $3
You have to buy 100 animals and spend $100, so how many cows, chickens, and pigs do you have on your farm?
Answered by Claude Tardif. |
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Cubic yards of topsoil |
2005-09-08 |
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From Ken:
How many cubic yards of topsoil would there be on 100 acres of land if you averaged a 2' depth of material.
Answered by Penny Nom. |
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Problème avec rapport point, prix... |
2005-09-08 |
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From Nico:
Le prix d'un diamant est proportionnel au carré de son poinds. Un diamant de 0.45 g vaut 7500euros.
1. Combie coute un diamant de 0.693 g ?
2. Quel est le poids d'une diamant valant 45000 euros ?
Je vous demande pas de le raisoudre à ma place mais j'aimeré comprendre comment je peut calculé le rapport entre le point et le prix.
Answered by Claude Tardif. |
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The length of a chord |
2005-09-08 |
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From A student:
how do you find the length of a chord given the angle and radius of the circle
Answered by Penny Nom. |
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n^2+n-1 has no divisors ending with 3 or 7 |
2005-09-08 |
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From Arne:
at least it seems like for any integers n and k,
10k+3 and 10k+7 do not divide n²+n-1
I tested this for every n from 0 to 3200 (which means same for the numbers from -3201 to -1)
could this be true, or is it just coincidence, or am I just totally wrong?
Answered by Richard McIntosh. |
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Le prix d'un diamant est proportionnel au carré de son poinds |
2005-09-07 |
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From Nico:
Le prix d'un diamant est proportionnel au carré de son poinds. Un diamant de 0.45 g vaut 7500euros.
1. Combie coute un diamant de 0.693 g ?
2. Quel est le poids d'une diamant valant 45000 euros ?
Je vous demande pas de le raisoudre à ma place mais j'aimeré comprendre comment je peut calculé le rapport entre le point et le prix.
Answered by Claude Tardif. |
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Given only the length of an arc & the length of its chord find the radius? |
2005-09-07 |
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From Robert:
Given only the length of an arc (72) & the length of its cord (71), how to find the radius?
Answered by Penny Nom. |
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quel sont les plus grands diviseurs communs? |
2005-09-07 |
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From Sylvain:
quel sont les plus grands diviseurs communs?
Answered by Claude Tardif. |
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A quadratic |
2005-09-06 |
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From Ginger:
I took a pre alg test today. There was a question on it that I am not sure and is bothering me. Can you tell me the answer?
x square + 13 + 14
Factor this
Answered by Penny Nom. |
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Exposant |
2005-09-06 |
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From Enzo:
Puis-je savoir combien donne 2 exposant 100 ?
et 9 exposant 3012 ?
Answered by Claude Tardif. |
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x = (y^2 - b^2)/2b |
2005-09-04 |
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From Bob:
while looking at x=(y2-b2)/2b on a table I was preparing for a graph, I saw that there is a point where x and y get closer to each other's value. By trial and error I tried to find the point where x=y. I saw a number which looked familiar and I realized it was the square root of 2. and so, if y=b(1+square root of 2) then x=b(1+square root of 2) also, or as x=y.
My question is: How can this result x=y when y=b(1+square root of 2) be algebraically derived from the equation x=(y2-b2)/2b without pre knowing it is so?
Answered by Penny Nom. |
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Seven consecutive reds in roulette |
2005-09-04 |
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From Joe:
I know that the odds are a little less than 50% for either black or red comming up on a spin of the roullette wheel. My question is what are the odds of red or black comming up 7 times in a row?
Answered by Penny Nom. |
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Adding positive and negative numbers |
2005-09-03 |
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From Billy:
46 + -24 =
-38 + -22 =
19 - 20 =
Answered by Penny Nom. |
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A room with a spa |
2005-09-02 |
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From Stanley:
I have a room that is 12 x 16 feet with an 8 foot diameter hole (spa) in it. How many square feet are in this room?
Answered by Penny Nom. |
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A system of equations |
2005-09-02 |
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From Gina:
How do you interpret the solution of a system of equations by the corresponding graph? Demonstrate your answer by the use of an example.
Answered by Penny Nom. |
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