Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

Hi, Tony and Misha.

Welcome to the Math is Fun forums. Good to have you here. There is a lot of math-related information here and many knowledgeable members. I am sure you will find these forums an excellent resource for any math-related question.

See you around the forums.

Hi, Matin.

Welcome to the Math is Fun forums. Good to have you here. There is a lot of math-related information here and many knowledgeable members. I am sure you will find these forums an excellent resource for any math-related question.

See you around the forums.

Hi, "mamabear".

Welcome to the Math is Fun forums. Good to have you here. There is a lot of math-related information here and many knowledgeable members. I am sure you will find these forums an excellent resource for any math-related question.

By the way: *No*, you do not sound like a loser. Life has many twists and turns; you are just doing things in a different order than other people.

See you around the forums.

So the numbers under the "Amount" heading refer to costs?

Is there a pre-determined policy for allocating that $3 that cannot be assigned to any of the companies?

At this point, I would just calculate the percentages using the numbers you have presented:

Company xxx: 10/30 = 1/3.

Apply this fraction to the (30 - 3 = 27): (1/3)(27) = $9

Company yyy: 8/30 = 8/30.

Apply this fraction to the 27: (8/30)(27) = $7.20

Company zzz: 9/30 = 3/10.

Apply this fraction to the 27: (3/10)(27) = $8.1

Alternately, you would calculate the initial proportions as 10/27, 8/27, and 9/27. But unless we are told the desired method, I am just guessing.

When you add the cost percentages, are they supposed to add up to a certain amount?

**DavidB**- Replies: 0

I didn't see this mentioned elsewhere in the forums, so thought I would mention it.

I think this is cool.

Google added some graphing functionality to its main search page. Here is the link from the Google blog introducing this feature:

"Showing some love to math lovers"

insidesearch.blogspot.com/2011/12/showing-some-love-to-math-lovers.html

It also includes some sample curves, so users get an idea how to use this feature.

Enjoy.

Hi, Omar.

Welcome to the Math is Fun forums.

Maligayang pagdating.

We are glad you joined us. There is a lot of math-related information and many knowledgeable members here. I am sure you will find these forums an excellent resource for any math-related question.

See you around the forums.

Hi, Anna.

See you around the forums.

Hi, Deon.

See you around the forums.

MathsIsFun wrote:

New page: Systems of Linear Equations

It turned out really long, but that seems inevitable. Waddya think?

I think it is very good. Thorough and explained in an easy-to-understand manner.

Although I did wonder why most of the page was typed and *some* was handwritten. To be consistent, I think it should have been all typed.

Other than that, I think it is a job well-done.

Just in case this question comes up in the future, the following link might be useful, on Microsoft's support site:

http://support.microsoft.com/kb/103839

Regards,

David

**DavidB**- Replies: 1

Here is a site with several numerical mathematical utilities:

http://www.akiti.ca/Mathfxns.html

For example, it has utilities for solving the Quadratic, Cubic, and Quartic Equations; solving N Equations in N Unknowns; Eigenvalues and Eigenvectors; and more.

In addition to using the posted routines themselves, the references are good too, if anybody is interested in reading more. (And the NETLIB site, too, is a fantastic repository of information and source code.)

Regards,

David

I have also found the online convertors at http://www.onlineconversion.com/ to be good.

Also, if you don't mind downloading a small program, there is also "Convert":

http://joshmadison.net/software/convert/

I have been using Convert for several years and never had a problem with it or a conversion it could not do. It is small, doesn't need an install program, just sits there on my desktop for when I need it, I just close it down when I am finished. Clean and slick.

Regards,

David

**DavidB**- Replies: 6

Hi, everybody.

Joined MathisFun on Friday and never received the password e-mail. Maybe blocked it or something; I have joined a few other forums and had similar problems there too, and the Administrators of those forums indicated that myway.com is not liked by some forum software. Anyhow, I re-requested the e-mail and this time it worked. So I am here now.

A little about me:

I enjoy math and computer science; as a hobby, I have written several numerical linear algebra routines and posted many of them on my website. They are intended for upper-level high-school students or undergraduate university students, so I am not sure how appropriate they would be for these forums.

I presently live in Vancouver, British Columbia, Canada.

Well, I guess that is all for now. I'll try to make myself helpful around these forums where I can.

Regards,

David

Pages: **1**