rabiramasho21 rabiramasho21
  • 08-05-2022
  • Mathematics
contestada

the mean of x y and z is 20. find the mean of x-5 y+4 z-5

Respuesta :

Melody08
Melody08 Melody08
  • 08-05-2022

Answer:

18

Step-by-step explanation:

Sum of x, y and z = 20 × 3

                             = 60

x-5+y+4+z-5 = 60-5+4-5

                    = 54

Mean of x-5, y+4 and z-5

= 54 ÷ 3

= 18

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