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Mathematics 15 Online
OpenStudy (vshiroky):

@hoblos

OpenStudy (vshiroky):

OpenStudy (vshiroky):

I don't know how to do this.

OpenStudy (hoblos):

y varies directly as x and inversely as square of z means \[y=k \frac{ x }{ z^2 }\]

OpenStudy (vshiroky):

Ok so I have 56=k 28/4

OpenStudy (vshiroky):

Now what?

OpenStudy (hoblos):

solve for k

OpenStudy (vshiroky):

How?

OpenStudy (vshiroky):

392?

OpenStudy (hoblos):

first multiply both sides by 4 then divide both sides by 28

OpenStudy (vshiroky):

k=8?

OpenStudy (hoblos):

correct

OpenStudy (vshiroky):

Ok so y=16?

OpenStudy (hoblos):

correct answer

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