Question

the mean of 10 number is 9 the sum of those number will be​

Answer 1

Answer:

d o n' t. n o o o o o y o u r. l a n g u a g e

s o r r y y y y y y

Answer 2

Answer:

Step-by-step explanation:

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→ Mean = sum of observation / number of observation

→ Let the 10 number be x

→ A.T.Q

→ (x + x + x + x + x + x + x + x + x + x)/10 = 9

→ 10x/10 = 9

→ 10x = 9 × 10

→ 10x = 90

→ x = 90/10

→ x = 9

→ All the ten numbers are 9.

→ Sum :

→ 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9

→ 90

→ sum of those number will be 90.