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Daca extremii unei proportii sumt 2,5 si 3,6,iar un mez este 1,25, celalalt nez este:

Răspuns :

[tex] \frac{2,5}{1,25}= \frac{x}{3,6} \\ \\ x= \frac{9}{1,25} \\ \\ x=7,2[/tex]

produsul mezilor=produsul extremelor
[tex] \frac{a}{b} = \frac{c}{d} \ \textless \ =\ \textgreater \ ad=bc[/tex]
[tex] \frac{2,5}{1,25} = \frac{x}{3,6} \ \textless \ =\ \textgreater \ x= \frac{2,5*3,6}{1,25} ;x= \frac{9}{1,25} ;x=7,2[/tex]