lucasdeziro85 lucasdeziro85
  • 21-06-2020
  • Mathematics
contestada

8) y is inversely proportional to x?.
When x = 4, y = 3.
Find y when x = 5.

Respuesta :

09pqr4sT
09pqr4sT 09pqr4sT
  • 21-06-2020

Answer:

[tex]\displaystyle y=2.4[/tex]

Step-by-step explanation:

[tex]{\displaystyle y\propto \frac{1}{x} }[/tex]

[tex]\displaystyle y=\frac{k}{x}[/tex]

[tex]\displaystyle 3=\frac{k}{4}[/tex]

[tex]\displaystyle 3 \times 4=k[/tex]

[tex]\displaystyle k=12[/tex]

[tex]\displaystyle y=\frac{12}{5}[/tex]

[tex]\displaystyle y=2.4[/tex]

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