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Mathematics 12 Online
OpenStudy (anonymous):

help please @ganeshie8 @jdoe0001 @jim_thompson5910

OpenStudy (anonymous):

OpenStudy (ivettef365):

use proportion and cross multiply, you have zinc to copper 3/19 and you have copper 272 lbs need to find zinc so you have 3/19 = x / 722 cross multiply and find value of x

OpenStudy (anonymous):

im confused

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