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Even-numbered roots 2004-03-01
A student pose la question :
I understand that the square root is defined to be positive only. Does the same rule apply to other even-numbered roots, such as the 4th root, or the 6th root, etc.?
Harley Weston lui répond.
Logs 2004-02-29
Sandy pose la question :
find X
3/2logb4-1/2logb8+logb2=logbx

my book uses prop 7 to rewrite as logb4raised3/2-logb8raised2/3+logb2=logbx; then writes logb8-logb4+logb2=logbx how did it get here?

Claude Tardif lui répond.
A dress-maker's pattern 2004-02-27
A dress-maker pose la question :
Does a dress-maker's pattern for a dress, such as a skirt made up of several pieces of isosceles trapezoid, qualify as a net? How about patterns for other types of clothing or accessories e.g. jackets, handbags?Î
Diane Hanson lui répond.
Napoleon's theorem 2004-02-27
David pose la question :
How do i prove this : For any triangle, if you make 3 equillateral triangles using the sides of the the original triangle, the central points of the 3 tringles another triangle that is equillateral.z
Chris Fisher and Penny Nom lui répond.
GST and PST 2004-02-26
Mallory pose la question :
I was absent on the day that my teacher taught the class how to find the GST and PST of items. I sort of understand that GST is 7% and PST is 7.5%, but our teacher said that we shouldn't combine the two to find the total amount... I'm really confused, so can you please help me?&
Claude Tardif lui répond.
Three jugs 2004-02-26
Shelly pose la question :
You have three jugs: A 6 Liter, 4 Liter and a 3 Liter. Your goal is to get exactly 5 Liters of liquid in the 6 Liter jug. Your supply of liquid is unlimited and there are NO markings on the containers. You cannot do halves.
Claude Tardif lui répond.
The point where all the medians meet 2004-02-25
A student pose la question :
What's the name of the point where all the medians meet?
Penny Nom lui répond.
Rearranging an expression 2004-02-24
Corey pose la question :

use the following formula to answer the question F=9c divided by 5 plus 32

rearange the formula to solve for c
how many degrees fahrenheit would it be it it was:
0 degrees celcius
-10 degrees celcius
-46 degrees celcius


Penny Nom lui répond.
An elliptic cone 2004-02-24
Ben pose la question :

I am building a model for my architecture class. I need to build a elliptic cone out of chipboard and i have no idea how to do this.

The cone needs to be 20in tall and the ellipse has a max radius of 10in and a min radius of 8in.

So my question is how do i lay this out on a piece of paper so that i can form the cone after i cut it out.


Penny Nom lui répond.
Profit, markup and discount 2004-02-22
Kick pose la question :
Using the calculation on your website, if I sell something for $885 and my cost is $296, I make $589 profit. How do I calculate the profit percent I made on that transaction?

Profit as a percentage of what it cost me?
Profit as a percentage of what I sold it for?

Penny Nom lui répond.
A problem with logs 2004-02-22
Caitlyn pose la question :
problem: ln x + ln (x-2) = 1

I can solve this on the calculator, but the book wants 1+ [(sqroot)1+e]. How can I get the e?

Penny Nom lui répond.
Selecting balls from a golf bag 2004-02-21
A student pose la question :
There are 5 white and 5 yellow balls in a golf bag. Two are selected randomly, and simultaneously. What is the probability that the first one or the second one will be white?
Penny Nom lui répond.
The dimensions of a rectangle 2004-02-21
Jane pose la question :
A rectangular label has an area of 176cm2 and a perimeter of 54cm. Find the dimensions of the label.
Penny Nom lui répond.
Gallons in a cylinder 2004-02-20
Jim pose la question :
Please advise how to use the formula I saw for determining the number of gallons in a cylinder? This is how it was written V = pi r2 h . does this mean pie, or 3.14 X radius squared, X the height? If so please use a standard 55 gal barrel (1' R & 3' H) for example?
Penny Nom lui répond.
Arrays 2004-02-19
A parent pose la question :
please demonstrate mathematical arrays fro a 3rd grader
Penny Nom lui répond.
 
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