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Proportionality |
2009-11-03 |
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Nazrul pose la question : If x is proportional to y , how can I prove that (x^2-y^2) is proportional to xy.
Please explain the process. Penny Nom lui répond. |
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The roots of a polynomial |
2009-11-03 |
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Jess pose la question : Find the value of a positive integer k such that f(x)=x^2 - 2kx + 55 has roots at k +3 and k - 3. Penny Nom lui répond. |
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A single die is rolled twice |
2009-11-03 |
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Michelle pose la question : A single die is rolled twice. Find the probability of getting two numbers whose sum exceeds 5.
I can't seem to come up with any of these answers, Help. A. 0.72 B. 0.89 C. 0.68 D. 0.58 Penny Nom lui répond. |
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A number puzzle |
2009-11-03 |
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Jacqui pose la question : Write a number sentence. Use every digit once, 7, 4, 3, 6, 5,10. Insert math symbols +, - , *,/ and end up with the number 3. Use parentheses if necessary.
Jacqui Claude Tardif and Penny Nom lui répond. |
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What's the next term? |
2009-11-03 |
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bharat pose la question : if
1=5
2=25
3=325
4=4325
5=? Robert Dawson and Penny Nom lui répond. |
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The extended real numbers |
2009-11-02 |
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Justin pose la question : Hello there, I was wondering is the set of extended real numbers a closed set or an open set?
Justin Robert Dawson lui répond. |
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Guess and check |
2009-11-01 |
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Laura pose la question : There is a game at the fair in which you toss
balls into bowls to win fish. There are 52
bowls. The larger bows contain five fish, and
the smaller ones contain three fish. If there are
202 fish total, how many bowls of each size are
there?
Laura Penny Nom lui répond. |
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A lottery question |
2009-11-01 |
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munirah pose la question : assume the chances of winning the lottery are 1 in 1000.how many times would you have to play to attain 0.5 probability of winning at least once? Robert Dawson and Claude Tardif lui répond. |
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At what rate are the people moving apart? |
2009-11-01 |
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saira pose la question : A man starts walking north at 4 ft/s from a point P. 5 minutes later a woman starts walking south at 5 ft/s from a point 500 ft due east of P. At what rate are the people moving apart 15 minute after the woman starts walking ? Harley Weston lui répond. |
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Consecutive positive integers |
2009-11-01 |
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Madi pose la question : I'm doing my homework, and there are questions on Consecutive Positive Integers. I was just wondering, what is a consecutive integer?
Or to be more specific, what is a consecutive POSITIVE integer? Penny Nom lui répond. |
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Sarah's age |
2009-10-31 |
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Kenneth pose la question : 2/3 of Mary’s age equals Sarah’s age and 3/4 of Ruth’s age equals Sarah’s age.
If the total ages equal 46, how old is each girl? Claude Tardif lui répond. |
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A path around a pond |
2009-10-31 |
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adeniji pose la question : find the area of a concrete path 2m wide surrounding a circular pond 12m in diameter Penny Nom lui répond. |
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Where is the Father? |
2009-10-30 |
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Jeffrey pose la question : A mother is 21 years older than her kid and within 6 years the child
will be 5 times younger than the mother. Where is the Father?
Jeffrey Robert Dawson and Claude Tardif lui répond. |
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Rationals |
2009-10-30 |
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Jawsh pose la question : I don't quite understand the whole idea of rationals.
If you have 3Squareroot 49. Is that equal to 3Squareroot 7^2?
Can you break it down with an example for me please. Robert Dawson lui répond. |
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The intersection of two graphs |
2009-10-30 |
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asma pose la question : by using the suitable scales,draw both the graph of x/2 + y/4 =3 and y=2 on the same graph paper.Find the points of intersection of the two graph. Penny Nom lui répond. |
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