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19-07-2016
Mathematics

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The variable Z is directly proportional to X. When X is 10, Z has the value 190.

What is the value of Z when X = 13

Respuesta :

Kunchan Kunchan

19-07-2016

since z is proportion to the x
z = a x
190 = a 10
a = 19

when x = 13
z = a x
z = 19 * 13
z = 247

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