Mathematics: 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

If y varies jointly with the square of x and inversely

Ответ:

jerria73

07.01.2022

y=15.75

Step-by-step explanation:

If y varies is jointly with $x^{2}$ and inversely as $\sqrt[3]{z}$ , then you can write the following expression, where k is the constant of proportionality:

$y=k*\frac{x^{2}}{\sqrt[3]{z}}$

If y=84, x=6 and z=27, you can find the constant of proportionality:

$k=y\frac{\sqrt[3]{z}}{x^{2}}$

$k=84\frac{\sqrt[3]{27}}{6^{2}}$

k=7

Then, when x=3 and z=64 y is:

$y=7(\frac{3^{2}}{\sqrt[3]{64}})$

$y=\frac{63}{4}$

y=15.75

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Ответ:

dbhuggybearow6jng

02.02.2023

Mathematics

bruh

Step-by-step explanation:

b-r-u-h

0,0(0 оценок)

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

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