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MaQveen44
@MaQveen44
May 2019
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Bjr, vous pouvez m'aider pour l'exercice 2 du DM de maths niveau 4ème. Merci.
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Verified answer
Bonjour,
2a) BE² = AE²+AB²
= 6²+6²
BE = √72≈8,5cm
EJ = 3cm
3a) trait vert = noir sur image
BJ ds JAB rectangle en A
BJ² = AB²+AJ²
= 6²+9²
calcule BJ et reponds à c)
BE+EJ = 11,5cm
b) BK ds KFB
BK² =KF²+FB²
= 3²+6²
BK = √45≈6,7cm
JK ds EJK
JK² =EJ²+EK²
= 3²+6²
JK = √18≈4,2cm
BK+KJ = 10,9cm
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Thanks 1
MaQveen44
Merci bcp
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Verified answer
Bonjour,2a) BE² = AE²+AB²
= 6²+6²
BE = √72≈8,5cm
EJ = 3cm
3a) trait vert = noir sur image
BJ ds JAB rectangle en A
BJ² = AB²+AJ²
= 6²+9²
calcule BJ et reponds à c)
BE+EJ = 11,5cm
b) BK ds KFB
BK² =KF²+FB²
= 3²+6²
BK = √45≈6,7cm
JK ds EJK
JK² =EJ²+EK²
= 3²+6²
JK = √18≈4,2cm
BK+KJ = 10,9cm