tahirdawar123 tahirdawar123

09-07-2016
Mathematics

contestada

Let xy = z, where x,y,z and nonzero numbers. If x is multiplied by 3 and z is divided by 3, this is equivalent to multiplying y by
A. 1/9 B. 1/3 C. 1 D. 3 E. 9

Respuesta :

09-07-2016

y=z/x
for the second case y₁=(z/3)/3x =(z/x)*(1/9) =y/9

thus answer is A

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