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coordinate distance

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by Ian Stewart » Mon Jul 28, 2008 8:55 am
Your work seems completely correct to me- the answer should be 19. Where is the question from?
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by dandillion » Mon Jul 28, 2008 9:01 am
It's from a rather old Princeton GMAT Diagnostic CD.
Must be their mistake.
Thank you Ian.
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by parallel_chase » Mon Jul 28, 2008 10:48 am
The answer is indeed 19. I used the distance method to find out the answer.

Even then I got x= -5 or 19, x cannot be -5 since the point is in first quadrant, therefore 19 is the answer.
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