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LuanaAires
@LuanaAires
November 2019
1
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Gente me ajudem a responder a 17 e 19
A 18 NÃO precisa
É URGENTE
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luizaademelol
A) 400 pães = 10 kg
x pães = 12,5 kg
10x=5000
x = 5000/10 ( 5000 dividido por 10)
x=500 pães
b ) 400 pães = 10 kg
750 pães = x kg
400x = 7500
x= 7500/400 ( 7500 dividido por 400)
x= 18,75 kg
----------------------------------------------------------------------------------------
19 ) a ) 4,5 hrs = 80 km/h
x hrs = 90 km
90x= 80 .4,5
90x= 360
x= 360 / 90 ( dividido)
X = 4 HORAS.
B) 90 = 4 hrs
x = 5 hrs
5x = 360
x= 360/ 5 ( dividido)
X = 72 km/h
2 votes
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Lista de comentários
x pães = 12,5 kg
10x=5000
x = 5000/10 ( 5000 dividido por 10)
x=500 pães
b ) 400 pães = 10 kg
750 pães = x kg
400x = 7500
x= 7500/400 ( 7500 dividido por 400)
x= 18,75 kg
----------------------------------------------------------------------------------------
19 ) a ) 4,5 hrs = 80 km/h
x hrs = 90 km
90x= 80 .4,5
90x= 360
x= 360 / 90 ( dividido)
X = 4 HORAS.
B) 90 = 4 hrs
x = 5 hrs
5x = 360
x= 360/ 5 ( dividido)
X = 72 km/h