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laplusbelle2002
@laplusbelle2002
January 2021
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Bonjour, pouvez-vous m'aider pour l'exercice 46 en math svp c'est urgent c'est pour demain. merci
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trudelmichel
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Bonjour,
triangle rectangle ABC
BC²=AC²+AB²
AB² =BC²-AC²
AB²=9²-7.5²
AB²=81-51.84
AB²=29.16
AB=5.4
triangle BAI rectangle en A
AI=AC/2=7.2/2=3.6
BI²=AI²+AB²
BI²=3.6²+9²
BI²=12.96+81
BI²=93.96
BI=9.6
triangle JAC rectangle en A
AJ=AB/2
AJ=9/2=4.5
JC²=AC²+AJ²
JC²=7.2²+4.5²
JC²=51.84+20.25=72.09
JC=8.4
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laplusbelle2002
merci
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Verified answer
Bonjour,triangle rectangle ABC
BC²=AC²+AB²
AB² =BC²-AC²
AB²=9²-7.5²
AB²=81-51.84
AB²=29.16
AB=5.4
triangle BAI rectangle en A
AI=AC/2=7.2/2=3.6
BI²=AI²+AB²
BI²=3.6²+9²
BI²=12.96+81
BI²=93.96
BI=9.6
triangle JAC rectangle en A
AJ=AB/2
AJ=9/2=4.5
JC²=AC²+AJ²
JC²=7.2²+4.5²
JC²=51.84+20.25=72.09
JC=8.4