10 articles trouvés pour ce sujet.
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An impossible problem |
2017-09-15 |
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Fay pose la question : Given math homework problem of: Gary and Larry given 2 numbers and told to add together. Gary subtracted and got 14. Larry multiplied and got 799. I tried substitution:
X-Y=14 and X x Y=799
X= Y+14
(Y+14) Y=799 and here I'm stuck at Y squared+14 Y= 799
using substitution I got 47x17=799 but not 14b when subtracted. HELP????? Penny Nom lui répond. |
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The sum of three integers is 30 |
2016-12-06 |
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Vaishnavi pose la question : _+_+_:30. Blanks are to be filled by(1,3,5,7,9,11,13,15) and numbers can be repeated. Penny Nom lui répond. |
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Three friends bought 13 books |
2016-12-06 |
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alexis pose la question : Marina bought 4 books José bought as many books as Ben bought together the 3 friends bought 13 books how many books did Ben buy Penny Nom lui répond. |
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External and interior angles of a regular polygon |
2016-04-19 |
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pearl pose la question : a polygon has n sides.The exterior angle is 8 times the interior angle
find the value of the interior angle
find the value of n Penny Nom lui répond. |
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The height of a triangle |
2016-02-03 |
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Brooklyn pose la question : How do I figure out the height of a triangle when it only tells me the base of he triangle? And vice versa. Penny Nom lui répond. |
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Factor x^2 + y^2 |
2015-08-26 |
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Jerome pose la question : Factor: x^2+y^2 Penny Nom lui répond. |
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Four equations in 3 unknowns |
2015-08-23 |
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damien pose la question : solve:
S x U - T = 44
T - U x S = 36
U + T - S = 7
U x U / S = 4 Penny Nom lui répond. |
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A rectangle and a triangle |
2014-09-27 |
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rajesh pose la question : The perimeter of a rectangle is equal to the perimeter of a right-angled triangle of height 12 cm if the base of the triangle is equal to the breadth of the rectangle, what is the length of the rectangle? Penny Nom lui répond. |
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Cutting a round cake so that it doesn't dry out |
2014-08-26 |
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James pose la question : I'm wondering if there's a simple way to calculate the area between two parallel chords of a circle equidistant from its diameter, or if I have the area, to find the distance between the two chords.
Here's my "problem". You may have heard of the way of cutting a round cake so that it doesn't dry out - make two parallel cuts (chords) the length of the cake, take the middle piece, then push the two pieces together.
So I know the area of a 12" cake, and I want say, exactly an eighth of the cake. How wide do I cut the centre piece?
Now to get even more difficult, the next day I want another eighth from the centre. How wide do I cut the next pieces, and so on...?
Thanks,
James Harley Weston lui répond. |
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Tapes and CD's |
2000-10-22 |
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Arnold pose la question : Nicole has 25 CDs and tapes altogether. When she tries to pair them up, she has 4 CDs left over. How many tapes does Nicole have? Penny Nom lui répond. |
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