Question

z varies inversely as w z=10 when w=0.3 find z when w=40 please show all your work...
so i can properly understand how you got the answer

Answer 1

Set up the equation first: z = k/w

Next plug in what is given to find k:

z = k/w
10 = k/.3
Multiply both side by .3
10*.3 = k
3 = k

Now rewrite the equation with the k we found:

z = 3/w

Last step; find z when w = 40

z = 3/40 = 0.075