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Mathematics 21 Online
OpenStudy (anonymous):

What is the value for the variable in the following diagram?

OpenStudy (anonymous):

OpenStudy (anonymous):

z/9 = 2/6 and away you go

OpenStudy (anonymous):

would that be 3? @douglaswinslowcooper

OpenStudy (nincompoop):

proof?

OpenStudy (anonymous):

what? @nincompoop

OpenStudy (nincompoop):

you need a proof that whatever solution you were given is the correct way to approach this problem

OpenStudy (anonymous):

yes, sure! if you could.

OpenStudy (nincompoop):

the person that gave you the hint should do it, I'd like to know how he came up with it.

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