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Mathematics 21 Online
OpenStudy (anonymous):

Anybody know how I would fine the missing values in this table, P w l 14 2 ? 22 8 ? in that "l" column - I feel like cross multiplying but I'm still confused cause of the three columns...

OpenStudy (turingtest):

I'm guessing P=perimeter w=width l=length assuming we're talking about a rectangle here, these three quantities are related by the formula P=2(l+w)

OpenStudy (anonymous):

so i use that formula to find each ?

OpenStudy (turingtest):

yes :) so in each you are given P and w, and asked to find l

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