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October 21, 2014

October 21, 2014

Posted by **Anonymous** on Monday, December 10, 2012 at 1:06pm.

x varies directly with y and inversely with z.

x = 5 when y = 10 and z = 5.

Find x when y = 20 and z = 10.

- algebra -
**Steve**, Monday, December 10, 2012 at 3:50pmx = ky/z

5 = k(10)/(5) ==> k = 5/2

x(20,10) = (5/2)(20)/(10) = 5

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