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Sagot :
Answer:
the age of the person that entered the room is 37
Step-by-step explanation:
[tex]m=\frac{sum of terms}{number of terms}[/tex]
[tex]\frac{x}{6} =21\\[/tex]
x=126
12+21+25+18+13=89
126-89=37
Answer:
Step-by-step explanation:
(12 + 21 + 25 + 18 + 13 + n) / 6 = 21
(12 + 21 + 25 + 18 + 13 + n) = 126
n = 126 - 12 - 21 - 25 - 18 - 13
n = 37
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