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Two problems |
2001-03-23 |
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James pose la question : Casey is a finanical consultant for ABC finance. She earns $456.21 weekly. Her annual group medical coverage costs $1942, of which ABC pays 65%. How much is deducted weekly for medical coverage? and: Eleanor demonstrates microwaves at the national home show. She is paid $7 for each of the first 7 demonstrations and $11 for each demonstration after 7. What is her commission for a day if she makes 12 demonstrations? Penny Nom lui répond. |
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A famous landmark |
2001-03-23 |
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Corinne pose la question : A family is traveling due west on a road that passes a famous landmark. At a given time the bearing to the landmark is N 62 degrees W, and after the family travels 5 miles farther the bearing is N 38 degrees W. What is the closest the family will come to the landmark while on the road? Harley Weston lui répond. |
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Genealogy |
2001-03-22 |
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Brian pose la question : In considering tracing genealogy the problem of a large and growing number of direct (grandparent) ancestors arose. Since the number of grandparents in any given generation doubles, for a person born in 2000 and assuming 25 year generations, in the year 1000 that person would have over one trillion direct ancestors in that year alone. Since estimates I have read place the total world population in 1000 at 250-300 million, the one trillion figure cannot be correct. I must be missing something in my calculations. Can you help provide the answer? While I am unlikely to be able to trace back to 1000, there is reason to believe 1250 is possible. Even in that year there would exist over one billion direct ancestors. That is certainly rather daunting and unlikely to be achieved if correct. Penny Nom lui répond. |
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Camille Jordan |
2001-03-22 |
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Missy pose la question : PLEASE SEND ME INFORMATION ON CAMILLE JORDAN AND HIS WORK IN ABSTRACT ALGEBRA Rick Seaman lui répond. |
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Factoring |
2001-03-22 |
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Kaleena pose la question : Factor this equation: 5x7-10x5+4x3-8x Harley Weston lui répond. |
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Why exactly can't you divide fractions? |
2001-03-22 |
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Dennis pose la question : Why exactly can't you divide fractions? Penny Nom lui répond. |
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The repetend in repeating decimals |
2001-03-21 |
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Sharon pose la question : What is the name for the bar over the repetend in repeating decimals? Also, what is the name of the long division "house"? Penny Nom lui répond. |
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A bargin with the devil |
2001-03-21 |
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DJ pose la question : There once was a boy who spent all his time dreaming about getting rich. " I would do anything to be rich". The devil, hearing this, appeared before the boy and offered to make him rich. "See that bridge?" said the devil. Just walk across and I will double your money you have now. In fact, each time you cross I will double your money. There is just one thing you must give me $24 after each crossing. The boy agreed. He crossed the bridge, stopped to count his money and, and sure enough, it had doubled. He paid the devil $24 and crossed again. Again his money doubled. He paid another $24 and crossed a third time. Again his money had doubled, but this time there was only $24 left which he had to pay the devil so he was left with nothing. The devil laughed and vanished. - How much money did the boy start with?
Penny Nom lui répond. |
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Timing with hour glasses |
2001-03-20 |
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Nathan pose la question : How can a chef use an 11 minute hour glass and a seven minute hour glass to time a vegtable that needs to be steamed for 15 minutes. Leeanne Boehm lui répond. |
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Radicals |
2001-03-18 |
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Nikki pose la question : 3) squareroot of x2 + 10x + 25 4) sixthroot of (m + 4)6 5) cuberoot of -64r6w15 . . . . Penny Nom lui répond. |
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Le volume d'un ellipsoïde |
2001-03-17 |
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Lise pose la question : Je cherche à calculer le volume d'un ovoide, avez-vous une formule? Claude Tardif lui répond. |
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Recherhce sur pi et exponentielle |
2001-03-17 |
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Cyril pose la question : étudiant a la fac de sciences de montpellier je cherche des informations concernant la demonstration suivante: "comment prouver que pi et exponentielle sont irrationnels?" Claude Tardif lui répond. |
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Systems of equations |
2001-03-16 |
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joy pose la question : How do u solve problems using systems of equations? ~ finding x and y~ ex:
26 = 3x - 2y 42 = 4x + y Penny Nom lui répond. |
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How can you prove a quadrilateral to be a parallelogram? |
2001-03-16 |
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Joy pose la question : How can you prove a quadrilateral to be a parallelogram? Walter Whiteley lui répond. |
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Zero |
2001-03-15 |
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Alexandre pose la question : j'aimerais beaucoup savoir si le chiffre zéro est considéré comme étant soit: - pair
- impair
- pair et impair à la fois
- ni pair ni impair.
Claude Tardif lui répond. |
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