0913281 0913281
  • 07-06-2018
  • Mathematics
contestada

If y is 2.5 when x is 5 and y varies directly with x, find y when x is 10.

Respuesta :

Wenxuan Wenxuan
  • 11-06-2018
Y=2.5 when X=5
Y=5 when X=10

Basically 10÷5=2 so 2.5×2=5
Answer Link
SociometricStar
SociometricStar SociometricStar
  • 10-05-2019

Answer:

The value of y is 5.

Step-by-step explanation:

We have been given that y varies directly with x. Thus, we have

[tex]y=kx[/tex]

Now, y is 2.5 when x is 5. Thus, we have

[tex]2.5=k(5)[/tex]

Divide both sides by 5, we get

[tex]k=0.5[/tex]

Now, we have to find y when x is 10.

[tex]y=0.5\times10\\\\y=5[/tex]

Therefore, the value of y is 5.

Answer Link

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