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Dhorme59
@Dhorme59
May 2019
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Bonjour j ai un exercice en math. Je ne comprends pas. Pourriez-vous m aider svp?
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trudelmichel
Verified answer
Bonjour,
l=x
P=2(L+x)
P=2(80+x)
P=160+2x
P<240
160+2X<240
2x<240-160
2x<80
x<80/2
x<40
Aire=L x l
Aire >3000
80x>3000
x>3000/80
x>37.5
d'où
37.5<x<40
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Verified answer
Bonjour,l=x
P=2(L+x)
P=2(80+x)
P=160+2x
P<240
160+2X<240
2x<240-160
2x<80
x<80/2
x<40
Aire=L x l
Aire >3000
80x>3000
x>3000/80
x>37.5
d'où
37.5<x<40