Posted by bob on Monday, January 26, 2009 at 7:15pm.
Direct and Joint Variation
2. The volume V of a rectangular prism of a particular height varies jointly as the length l and the width w, and V = 224 ft when l = 8 ft and w = 4 ft.
Find l when V = 210 ft and w = 5 ft.

algebra  bobpursley, Monday, January 26, 2009 at 7:48pm
see below.
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