Question 308977
Suppose that y varies jointly with w and x and inversely with z
Let k = the variation constant
y = {{{(k*w*x)/z}}}
:
and y=360 when w=8, x=25, and z=5. Write the equation that models the relationship.
{{{(k*8*25)/5}}} = 360
:
{{{(200k)/5}}} = 360
:
40x = 360
k = {{{360/40}}}
k = 9 is the constant
and
y = {{{(9wx)/z}}} is the equation
:
Then find y when w=4 and z=3. We have to know x, when you know that, use the above equation to find y