Mathematics, 17.10.2019 09:20 lashaaungas
If y varies jointly with the square of x and inversely as the cubed root of z and y= 84 when x=6 and z= 27, what is y when x=3 and z=64
Answers: 1
and inversely as ![\sqrt[3]{z}](/tpl/images/0327/9458/88c29.png)
, then you can write the following expression, where k is the constant of proportionality:![y=k*\frac{x^{2}}{\sqrt[3]{z}}](/tpl/images/0327/9458/97c43.png)
![k=y\frac{\sqrt[3]{z}}{x^{2}}](/tpl/images/0327/9458/87a74.png)
![k=84\frac{\sqrt[3]{27}}{6^{2}}](/tpl/images/0327/9458/7b7d1.png)
![y=7(\frac{3^{2}}{\sqrt[3]{64}})](/tpl/images/0327/9458/a231e.png)
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If y varies jointly with the square of x and inversely as the cubed root of z and y= 84 when x=6 and...
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