miag2001 miag2001
  • 26-05-2016
  • Mathematics
contestada

If m varies directly with x 2 , and m = 10 when x = −4, find the value of m when x = 3

Respuesta :

alex3245
alex3245 alex3245
  • 29-05-2016
If it is directly proportional, then:

m = kx
10 = k x -4
k = -2.5

m = 3 x -2.5
m= 7.5

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