KaiBurg KaiBurg

04-10-2020
Mathematics

contestada

if z is directly proprotional to x and z = 12 when x = 3, find the value of x when z = 18

Respuesta :

mhanifa mhanifa

04-10-2020

Answer:

4.5

Step-by-step explanation:

z is directly proportional to x

z = kx, where k is coefficient

If z = 12 when x = 3

Then we have

12 = 3k
k = 4

So the coefficient is 4

When z = 18, we have

18 = 4x
x = 18/4
x = 4.5

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