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Helen097
@Helen097
August 2019
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Calcule a quarta propocional dos números
A) 6,18 e 15
B) 25,4 e 32
C) 20,10,5
D) 30,3,30
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ewerton197775p7gwlb
A ) 6/18 = 15/x
6x = 18 . 15
x = 270/6
x = 45
B ) 25/4 = 32/x
25x = 4 . 32
x = 128/25
x = 5,12
C ) 20/10 = 5/x
20x = 5 . 10
x = 50/20
x = 2,5
D ) 30/3 = 30/x
30x = 3 . 30
x = 90/30
x = 3
espero ter ajudado
1 votes
Thanks 2
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Lista de comentários
6x = 18 . 15
x = 270/6
x = 45
B ) 25/4 = 32/x
25x = 4 . 32
x = 128/25
x = 5,12
C ) 20/10 = 5/x
20x = 5 . 10
x = 50/20
x = 2,5
D ) 30/3 = 30/x
30x = 3 . 30
x = 90/30
x = 3
espero ter ajudado