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A common tangent to two curves |
2009-03-02 |
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Jay pose la question : For what values of a and b will the parabola y = x^2 + ax + b be tangent to the curve y = x^3 at (1,1)? Penny Nom lui répond. |
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The area of a 5-sided lot |
2009-03-02 |
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Linda pose la question : I have a problem I'm hoping you can provide some help with. When I check the property information for our home on our District of North Vancouver website, it shows that our property is supposed to be 1146.99 Square Metres. Yet another property which has identical measurements is listed as having 1173.7 Square Metres. I would like to figure out who is correct. Harley Weston lui répond. |
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If 5 to the power of y = 625, what is y? |
2009-03-02 |
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Charlene pose la question : If 5 to the power of y = 625, what is y? Penny Nom lui répond. |
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The sum is 43 and the difference is 9 |
2009-03-02 |
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Teresa pose la question : Hi, My 10yo son came home with this two problems and we can't figure out how to solve them.
1. Find two numbers whose sum is 43 and whose difference is 9 and
2. Find two numbers whose sum is 25 and whose difference is 11..
Many thanks
Teresa Robert Dawson, Stephen La Rocque and Harley Weston lui répond. |
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Is ACB a right angle? |
2009-03-02 |
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racheal pose la question : how to i prove angle ACB is not a rt. angle when given AT=BT=5;CT=4 in a indirect proof? Robert Dawson lui répond. |
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Symmetries of a polyhedron |
2009-03-02 |
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Vincent pose la question : I want to ask is there a formula to find out the number of axes of rotation & plane
of reflection of a 3D figure, like pentagon, pyramid? Chris Fisher lui répond. |
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Comparing 2^3^4^5 ; 2^5^4^3 ; 5^4^3^2 etc. |
2009-03-01 |
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JIM pose la question : WHICH WOULD BE LARGEST USING THE NUMBERS 2,3,4,5 :
2^3^4^5 ; 2^5^4^3 ; 5^4^3^2 : ETC. OF ALL THE POSSIBLE
COMBINATIONS ? IS THERE A GENERAL FORMULA ? I AM
UNABLE TO FIND A COMPUTER THAT CAN HANDLE SUCH LARGE
CALCULATIONS . I ALSO DO NOT THINK IT IS AS STRAIGHT-
FORWARD AS FIRST APPEARS . THANK-YOU , JIM Stephen La Rocque, Robert Dawson and Harley Weston lui répond. |
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Implicit differentiation |
2009-03-01 |
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Emily pose la question : determine the derivative y' at the point (1,0)
y= ln(x^2+y^2)
y'(1)= ?? Stephen La Rocque lui répond. |
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The game of 24 |
2009-03-01 |
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Jeff pose la question : My son in the 5th grade was given a problem for extra credit and could use parents help. He was given the numbers 21, 13, 9, 6 and asked to use each number only once by +, -, /, x the numbers in any order to obtain an answer of 24. Harley Weston lui répond. |
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An octagonal landscaping frame |
2009-03-01 |
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Richard pose la question : Hi
I am trying to put landscape timbers down in octagon shape that measures 6
feet across and outside measures 360 degrees.. The timbers are 4 inches by 4
inches. I need to know at what angle to cut boards and at what length i need to
complete octagon.
Thanking you in advance for your kind assistance.
Richard :) Harley Weston lui répond. |
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An array with 2 more rows than columns |
2009-02-28 |
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Mario pose la question : Write a division sentence modeled by an array that has 2 more rows than the number in each row. Penny Nom lui répond. |
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An annuity |
2009-02-27 |
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Jules pose la question : R 20 000 is deposited in the bank,at the end of each year R 5 000
is withdrawn from it, the interest is 13 percent compounded monthly.
Calculate how many years that person will be able to use his/her money ? Stephen La Rocque lui répond. |
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Simplify the square root of 125 x^2 |
2009-02-27 |
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Ashley pose la question : √125x²
How do you simplify this equation assuming that variables can represent any real number? Robert Dawson lui répond. |
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Where do X, Y and Z go? |
2009-02-27 |
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Aj pose la question : A E F H I K L M N T V W
B C D G J O P Q R S U
where do X, Y and Z go? Robert Dawson lui répond. |
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Three number combinations |
2009-02-27 |
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mark pose la question : How many three number combinations can I get using 1,2,3,4,5? I can use a number more than once. Robert Dawson lui répond. |
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