Posted by **Lindz** on Thursday, July 26, 2007 at 1:04am.

Driving down a mountain, Tom finds that he has descended 1800 ft

in elevation by the time he is 3.25 mi horizontally away from the top of the

mountain. Find the slope of his descent to the nearest hundredth.

I put the numbers into the equation like:

1800/3.25*5280

1800/17160

= 0.10489

= 0.10

but my question is, does this need to be a negative 0.10 because it is the slope of decent? or did I even set up the problem right??

It is OK to specify the slope of the road as a postive number (0.10 in this case) , since you are talking about the road itself, regardless of the direction that it is being driven. Road slopes are always presented as positive numbers

wow, thank you so much for your help!! :D you're awesome!

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