If z varies inversely as w, and z=10 when w=0.6, how do you find z when w=20?

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Answer 1 · 2018-03-24T09:58:35

#z=0.3#

When working with variance (proportion) - either direct or inverse, you need the find the value of the constant first.

#z prop 1/w " "rarr z = k/w#

#k = w xx z#

#k = 0.6 xx10 = 6" "# use the given values to find #k#

#:. z=6/w" "or" "w=6/z" "or" "wz=6#

Now #" "z =6/20#

#z= 6/20 = 3/10 = 0.3#