montrer que si on augmente toutes les notes de 2 points d'un controle, alors on augmente la moyenne .... Pergunta de ideia demanon2838

manon2838 @manon2838

May 2023 1 38 Report

montrer que si on augmente toutes les notes de 2 points d'un controle, alors on augmente la moyenne de ces notes de 2 points

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hirondelle52

Bonjour;

5 notes

x x x x x

5x/5 = x

x+2+x+2 +x+2+x+2+x+2 = 5x+10

= 5( x+2)

5(x+2)/ 5 = x+2

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