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If Z varies inversely as W, and Z=30 when W=0.3 how do you find Z when W=30?

Answer 1

To find Z when W=30, we can use the inverse variation equation. The equation for inverse variation is Z = k/W, where k is the constant of variation.

First, we need to find the value of k. We can do this by substituting the given values of Z and W into the equation.

30 = k/0.3

To solve for k, we can multiply both sides of the equation by 0.3:

k = 30 * 0.3

k = 9

Now that we have the value of k, we can substitute it back into the inverse variation equation to find Z when W=30.

Z = 9/30

Z = 0.3

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Answer 2

Savannah Anderson

#Z = 3/10#

#Z prop (1/W)# then #Z = k(1/W)#

#30 = k(1/0.3) -> k =30*0.3 = 9#therefore, #Z = 9(1/W)#

when #W = 30#,

#Z = 9 (1/30) = 3/10#

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.