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Write an equation that relates the quantities.
W varies jointly with n and s and inversely with the cube of t. The constant of proportionality is 8.14.
W=

Write a general formula to describe the variation.
z varise directly with the sum of squares of x and y; z=2 when x=6 and y=2
z=

Write a general formula to describe the variation.
 The square of T varies directly with the cube of a and inversely with the square of d; T=6 when a=3 and d=5
T ^{2}=

Write a general formula to describe the variation.
 y varies directly with x; y=6 when x=48
y=

Decide whether the following statement is true or false.
If y varies directly with x, then y=, where k is a constant.
False

Write a general formula to describe the variation.
A varies directly with x^{2}; A=50 when x=5
A= 2 x ^{2}

