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Ayoute
@Ayoute
May 2019
1
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Bonsoir dm de math pour demain
merci de m'aider
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calinizou
Verified answer
Bonsoir
réciproque de pythagore
ao²+ob²=ab²
9²+12²=15²
81+144=225 réciproque prouvé donc bien rectangle
ac/ao=cd/ob
3/9=cd/12 donc cd=12*3:9=4
aire de aob= 9*12/2=54
aire de acd=3*4/2=6
6*3=18 et pas 54
54:6=9 donc multiplier par 9
* veut dire multiplier
/ veut dire diviser
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Verified answer
Bonsoirréciproque de pythagore
ao²+ob²=ab²
9²+12²=15²
81+144=225 réciproque prouvé donc bien rectangle
ac/ao=cd/ob
3/9=cd/12 donc cd=12*3:9=4
aire de aob= 9*12/2=54
aire de acd=3*4/2=6
6*3=18 et pas 54
54:6=9 donc multiplier par 9
* veut dire multiplier
/ veut dire diviser