lphsongbird11 lphsongbird11

19-07-2022
Mathematics

contestada

if z varies jointly with x and y when x=3, y=-1, and z=12, what is z when x=-5 and y=6

Respuesta :

reinhard10158 reinhard10158

23-07-2022

Step-by-step explanation:

z = 12 = k × 3 × -1

12 = k×-3

-4 = k

z = k× -5×6 = k×-30 = -4 × -30 = 120

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