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Tatiana13020404
@Tatiana13020404
April 2019
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Le 3) de l'exoo 1 Et L'exoo 2 j'ai vraiment rien compris vous pouvez m'aider svppp
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Verified answer
15x²-48=9x²+81
15x²-9x²=81+48
6x²=129
x² = 129/6 =43 / 2
x=- racine (43/2) ou x=racine (43/2)
22) on tire une boule P(C) = 1-7/ 13=6/13
P(A) = 4/13 P(B)=2/13
3)p(D)= 7/13*6/12=0.269
p(E)=7/13 *4/12=0.179
P(F)=7/13*6/12 +7/13*4/12 + 4/13*7/12+4/13*3/12
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Verified answer
15x²-48=9x²+8115x²-9x²=81+48
6x²=129
x² = 129/6 =43 / 2
x=- racine (43/2) ou x=racine (43/2)
22) on tire une boule P(C) = 1-7/ 13=6/13
P(A) = 4/13 P(B)=2/13
3)p(D)= 7/13*6/12=0.269
p(E)=7/13 *4/12=0.179
P(F)=7/13*6/12 +7/13*4/12 + 4/13*7/12+4/13*3/12