20-07-2016
Mathematics

contestada

The variable Z is directly proportional to X. When X is 6, Z has the value 72.
What is the value of Z when X = 13?

Respuesta :

Ckaranja Ckaranja

26-07-2016

z[tex] \alpha x[/tex]
Z=kX
where k is a constant of proportionality;
When x=6, z=72
72=6k
k=12
Z=12X
When x=13
Z=12*13
Z=156

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