Question

if z2 is directly proportional to x3 and z=8 when x=4,find the values of z when x=9​

Answer 1

Step-by-step explanation:

from the question,z^2=x^3

z=8 when x=4

then,z=? when x=9

z^2=x^3---eq.1

substitute x value in the above equation

z^2=9^3

z^2=729

z=√729

z=27

therefore, z= 27

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Answer 2

Step-by-step explanation:

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