SOLUTION: Suppose that y varies directly with x and inversely with z; y = 27 when x = 21, and z = 7. Write the equation that models the relationship. Then find y when x = 25 and z = 5.
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-> SOLUTION: Suppose that y varies directly with x and inversely with z; y = 27 when x = 21, and z = 7. Write the equation that models the relationship. Then find y when x = 25 and z = 5.
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Question 763518: Suppose that y varies directly with x and inversely with z; y = 27 when x = 21, and z = 7. Write the equation that models the relationship. Then find y when x = 25 and z = 5. Answer by Cromlix(4381) (Show Source):
You can put this solution on YOUR website! y varies directly with x and inversely with z
y = k x/ z
k = constant of variation
to find k
27 = k*21/7
k = 27 * 7/21
k = 9
Equation:
y = 9*x/z
y = 9*25/5
y = 45
Hope this helps.
:-)
