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Sagot :

VINS

bonjour

niveau lycée, je doute ...

( x - 7 )² = x² - 14 x + 49

( 4 x + 1 )² = 16 x² + 8 x + 1

g ( 6) = 15

f (x) = 3 x² - 6 x + 10

f ( - 2) =  12 + 12 + 10 = 34

1 ) proba rouge  =  6 /8  = 3 /4

2)  proba non rouge  = 1 -  3/4 = 4/4 - 3 /4 = 1 /4

3 )   soit v les jetons verts

v / ( 8 + v) =  0.5

v  = 4 + 0.5 v

v - 0.5 v  = 4

0.5 v = 4

v = 8

il y a 8  verts

8 / 16 = 1 /2 = 0.5

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