eveatron eveatron

30-05-2015
Mathematics

contestada

A tv has height:width in ratio 9:16. In a scale drawing the height is 4.5cm. What would the width be?

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RedRicin RedRicin

30-05-2015

[tex]\frac{4.5}{width}=\frac{9}{16}\\\\cross\ multiply.\\16\times4.5=9(width)\\72=9(width)\\\boxed{width=8\ cm}[/tex]

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