ive had it with math...

[GeneW]

By the way, a little trick for the future....

Dimensional analysis....

It's really easy.... you have values called dimensions, such as weight, length, and so on. Even nouns can be dimensions.

So if you have a price for a bottle of liquor it's not $36.00 but $36.00/bottle. The term "bottle" is in the divisor. To get it out of the divisor you multiply the price times the number of bottles to get a total price...

$36.00/bottle times 5 bottle = $36.00/[strike]bottle[/strike] times 5 [strike]bottle[/strike] = $180.00 plus tax.


See, we didn't give you the entire story. If you redo the equations PROPERLY it gives you useful clues to make things go better. Really really useful during a crunch situation, like you're taking an exam or a customer is flipping out and you have to get them an answer FAST...


Xbottles + Ybottles = 37 bottles total

$1000 = $36.00/bottle*Xbottles + $20.00/bottle*Ybottles

Note that I've shown all of the dimensions... and that you can use these dimensions as a "check" to see that your equations are valid.

This is one of those little "inside tricks" that lets us figure out if we're right or wrong.


As one Prof told me years ago, "We all make mistakes, but with experience and education we learn how to detect and recover from those mistakes faster and better.

Gene