SOLUTION: A variable a varies jointly as b and the square of c and inversely as d. When a= -14, b=5, c=8, and d=20. Write the equation to represent this variation. Then find a when b=4, c=6,

Question 620191: A variable a varies jointly as b and the square of c and inversely as d. When a= -14, b=5, c=8, and d=20. Write the equation to represent this variation. Then find a when b=4, c=6, and d=9.
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
Let the variable be a
You are told

now plug in the values of a= -14, b=5, c=8, and d=20
and solve for K

Plug in K

now plug in b=4, c=6, and d=9 and solve for a

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