## Math equation problem

Asking for a friend: I have a question about how to work out a student's exam mark. Unit 1 is worth 60%, Unit 2 is worth 40%. Both units are marked out of 80. For example, a student scores 67/80 on unit 1 and 69/80 on unit 2. What is their overall mark? Thanks for any help!
posted by charlen on May 28, 2015 - 9 answers

## What does a bivariate cubic polynomial look like?

What does a bivariate cubic polynomial look like?
posted by tybeet on Jul 13, 2011 - 9 answers

## Does this tattoo equation mean to you what I mean it to?

Math and science geeks, does this fake equation make sense? 'delta' = c ... meaning "change is constant".
posted by attercoppe on May 15, 2011 - 33 answers

## What the heck is an imaginary exponent?

What does it mean to raise a number to an imaginary power?
posted by slappy_pinchbottom on Mar 16, 2011 - 29 answers

## How to manipulate "12 = x - (square root of x)" into "x="

The solution to 12 = x - (square root of x) is 16, but how do I manipulate the equation to show that?
posted by Wanderboy on Feb 23, 2011 - 47 answers

## Ah! Real, living story problems!

Math Filter: I am trying to find a name for this equation. I am not sure if I can solve it given the information that I currently have.
posted by occidental on Jan 17, 2011 - 14 answers

## Principle domain of a polar equation?

I need help understanding the "principle domain" (a term only my professor seems to use) of a polar function. That is, how do I find the smallest value delta such that [0,delta] plots all of the unique points on the curve; any values greater than delta re-trace points. I suspect that if MeFi could identify the more common name for this, uh, procedure, I'd be set.
posted by phrontist on Aug 4, 2010 - 10 answers

## Math equation / algorithm for a database

I'm looking for some help with a math equation / algorithm I'm trying to create. I'm a programmer by trade and not very good at math so I'd like some help with this or perhaps a site where I could pay someone to come up with the equation I'm looking for. I considered rentacoder or elance however I'd be concerned if the companies there had the proper math knowledge. A lot of claims get made on those sites that turn out to be false.
posted by JohnGL on Jul 3, 2008 - 6 answers

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