Rafi0786 Rafi0786

28-07-2021
Mathematics

contestada

10,4,7
The above set 4 numbers have a mean of 8
what could the mystery number

Respuesta :

fayangelsage fayangelsage

28-07-2021

11 is the mystery number

Answer Link

23-08-2021

Answer:

The mystery number is 11

Step-by-step explanation:

→ Set up an equation

( 10 + 4 + 7 + x ) ÷ 4 = 8

→ Multiply both sides by 4

21 + x = 32

→ Minus 21 from both sides

x = 11

Answer Link

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