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Old June 30th, 2008, 06:33 AM
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Quote:
Originally Posted by amenbreakz View Post
1118/516=348*1118/516 =754m


sorry am not used to the symbols what is / and * in relation to sum
/ means division and * means multiply. Unfortunately this expression makes no sense. It should be written with more detail and on more than one line.

1118/516=348*1118/516 =754m

Should be
\frac{1118~m}{516~m/s} = 2.16667~s
is the time it takes for the cars to meet, so

(348~m/s) \left ( \frac{1118~m}{516~m/s} \right ) = (348~m/s)(2.16667~s) = 754~m

amenbreakz: Something like the line "1118/516=348*1118/516 =754m"
appears every now and again on student papers. It's a common mistake to make (I've seen it a lot) but it is Mathematically incorrect, so I'd advise that in the future you omit the first equal sign. You may lose points for writing such an expression on an exam.

-Dan
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