beasleymorgann beasleymorgann
  • 03-11-2020
  • Mathematics
contestada

The value of y varies directly with x. If x = 4, then y = 20.

What is the value of x when y = 60?


5

7

12

44

Respuesta :

topeadeniran2 topeadeniran2
  • 09-11-2020

Answer: 12

Step-by-step explanation:

Since value of y varies directly with x, we introduce a constant, k which will give:

y = kx

If x = 4, then y = 20 we then calculate the value of k.

y = kx

20 = 4k

k = 20/4

k = 5

We then find the value of x when y = 60. This will be:

y = kx

60 = 5x

x = 60/5

x = 12

The value of x is 12 when y is 60

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