liyaeleni2021 liyaeleni2021

21-05-2021
Mathematics

contestada

the mean of six numbers is 12 five of the numbers are 11 7 21 14 and 9 calculate the six numbers

Respuesta :

clarch19 clarch19

23-05-2021

Answer:

sixth number is 10

Step-by-step explanation:

(11 + 7 + 21 + 14 + 9 + x) / 6 = 12

(62 + x) / 6 = 12

cross-multiply to get:

62 + x = 72

x = 10

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