qwertylol12345
qwertylol12345 qwertylol12345
  • 28-01-2019
  • Mathematics
contestada

I need help!

[tex]\frac{7.2}{x} =\frac{.25}{1\frac{1}{9} }[/tex]

Respuesta :

gmany
gmany gmany
  • 29-01-2019

[tex]\text{Convert the mixed number to the improper fraction}\\\\1\dfrac{1}{9}=\dfrac{1\cdot9+1}{9}=\dfrac{10}{9}\\\\\dfrac{7.2}{x}=\dfrac{0.25}{\frac{10}{9}}\qquad\text{cross multiply}\\\\0.25x=\dfrac{7.2\cdot10}{9}\\\\0.25x=\dfrac{72}{9}\\\\0.25x=8\qquad\text{multiply both sides by 4}\\\\1x=32\\\\\boxed{x=32}[/tex]

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