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please help I dont understand Scale factor ​

Please Help I Dont Understand Scale Factor class=

Sagot :

[tex]\\ \sf\longmapsto \dfrac{x}{45}=\dfrac{18}{27}[/tex]

[tex]\\ \sf\longmapsto \dfrac{x}{45}=\dfrac{2}{3}[/tex]

[tex]\\ \sf\longmapsto 3x=90[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{90}{3}[/tex]

[tex]\\ \sf\longmapsto x=30[/tex]