Seudónimo Seudónimo
  • 03-09-2021
  • Mathematics
contestada

The mean of 19 numbers is 17. An extra number is included and the mean increases to 23. What is the extra number?

Respuesta :

Melody08
Melody08 Melody08
  • 03-09-2021

Answer:

Extra number = (23×20) - (19×17)

= 137

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