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Explications |
2000-03-05 |
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Jean Barbe pose la question : Comment expliquer l'algèbre à un adolescent du Sec. 111 Claude Tardif lui répond. |
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Two calculus problems |
2000-03-03 |
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Tara Doucet pose la question :
The height of a cylinder with a radius of 4 cm is increasing at rate of 2 cm per minute. Find the rate of change of the volume of the cylinder with respect to time when the height is 10 cm. A 24 cm piece of string is cut in two pieces. One piece is used to form a circle and the other to form a square. How should the string be cut so the sum of the areas is a maximum? Harley Weston lui répond. |
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Angle of Intersection of Two Lines |
2000-03-02 |
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Veronica Patterson pose la question : I am having a real hard time trying to figure out this problem. Could you please help me! The homework question says to find the acute angle of intersection between the two lines y=3x+1 and y=(1/2)x-1. (It also says to use the results of a problem I had already figured out.) That problem was to use information from a picture shown that tan(theta sub1-theta sub2)= ((m sub2- m sub1)/(1+(m sub1 * m sub2))). I used the difference identity of tangent to figure out the answer. Any help on this problem would be greatly appreciated. Harley Weston lui répond. |
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Triangular numbers and square numbers |
2000-03-02 |
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Emily McCallum pose la question : Would someone find me some math activities using triangular numbers and square number. Especially acitivities that actually form the shapes. They need to be at the 5th grade or 6th grade level. But you can not find anything that can be tauht at these level, that fine. I just need to be able to teach this new subject or kind of math to my kids. Rick Seaman and Penny Nom lui répond. |
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The positive effects of mathematics on human's thought |
2000-03-02 |
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Yucel Tucker pose la question : I am a student of secondary school. I have to prepare a homework about " the positive effects of mathematics on human's thought". If you help me I'll be pleased. thank you... Walter Whiteley lui répond. |
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Pythagorean triples |
2000-03-01 |
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Bob Ross pose la question : Could you please tell me what pythagoria triad is.I am a year 10 student. Chris Fisher lui répond. |
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Proportionality in a triangle |
2000-03-01 |
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Courtney Smith pose la question : I would appreciate assistance with the following problem In triangle ABC,segment MN divides sides(segment)AC and (segment)AB proportionally. If the coordinates are A(3,7),M(0,10) and N(8,22) and if AM:MC = 3:1, find the coordinates of B and C. Penny Nom lui répond. |
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Saving for college |
2000-03-01 |
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Andrew Kunz pose la question : SAVING FOR COLLEGE In this project, you will forecast a friend's finances. Jane has received $75 from her grandparents on every birthday since she was one year old. She has been saving the money in an account that pays 5% interest. She is saving her money to help you pay for her college education, which she will start this fall after her 18th birthday. She also has been receiving birthday checks from her other relatives, but these didn't start until she was 12 years old. The amounts of these checks from her 12th birthday until her 18th birthday are $45, $45, $55, $50, $55, $60, $65. How much money will she have saved just from her birthdays by the time she starts college? IS this a reasonable amount to pay for a used car during her junior year in college? If she had invested her money in a different accoutn that had earned 7% interest, how much more money would she have saved? Penny Nom lui répond. |
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Folding a page |
2000-03-01 |
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Krista Bischoff pose la question : One corner of a page of width a is folded over and just reaches the opposite side. Express L, the length of the crease, in terms of x and a. I can't get the picture to copy to this form so I guess I will have to try and describe the picture the best that I can. The top right hand corner is folded to the left side, almost half way down. The width of the paper is a ( the width of the bottom part which is not folded.) The creased side is L and the part shorter part of the folded area is x (the part that would have been the top right of the original piece.) Chris Fisher lui répond. |
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What's the next term? |
2000-02-29 |
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Meredith O'Neill pose la question : At this point, the whole family wants to know the answer. if possible an explanation. thanks a sequence ? 16,37,58,89,145 ?? Chris Fisher lui répond. |
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Area of a circle |
2000-02-29 |
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Michelle Buboltz pose la question : My name is michelle and I just need to convert 25 ft across a circle into how many square feet. Penny Nom lui répond. |
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A negative times a negative |
2000-02-29 |
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Michael J. Butler pose la question : I have reviewed the answer in relation to the question of why (-3)x(-2)=6; however, I am still not able to properly explain the reasoning to my son, Jonathan, who is in grade 7. I want him to understand the reason for the rule that the multiplication or division of two negative numbers equals a positive number. Can you help? Chris Fisher lui répond. |
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Order of operations |
2000-02-27 |
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Mildred Saulsbery pose la question : Find the value of the expression. 6(5+1) - 9(1+1) _____________ 5(8 - 6) -23 Harley Weston lui répond. |
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Fractions in algebra |
2000-02-27 |
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Leslie pose la question : Question:
add (4x+1)/(x-8) + (3x+2)/(x+4) + (49x+4)/(x^2-4x-32) and
solve x - 6/(x-3) = 2x(x-3) Penny Nom lui répond. |
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Factoring, primes, GCF and LCM |
2000-02-27 |
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Ruth Kroek pose la question : My son is in grade seven, he has to do a Factoring Booklet the areas covered are: - Prime #'s
- Composite #'s
- Rainbow Factoring
- Finding Multiples (consecutive multiples)
- Finding GCF of 2-3 numbers uning Rainbow factoring
- Finding LCM of 2 numbers using consecutive multiples
- prime factor trees
- prime factor ladders
- finding GCF of 2 numbers using Prime number Method
Although his text 'Math Power' gives some information, we are at a loss .. Penny Nom lui répond. |
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