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JMangeDesFrites75
@JMangeDesFrites75
May 2019
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Bonjour, vous pouvez m'aider dans ses exos de maths ( le 17 et le 20 ) merci bcp de m'aider c 'est un dm pour lundi
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toumayanlaura
Exercice 17 :
on nomme x le nombre recherché dans chacun des cas.
a.
5.7/x = 1.9/4
a.
x = (5.7*4)/ 1.9
a.
x = 22.8 /1.9
a.
x = 12
b.
0.82/1.3 = 0.41/x
b.
x =(1.3*0.41)/0.82
b.
x =0.533 / 0.82
b.
x = 0.65
c.
7.5/20 = 15/x
c.
x = (20*15) / 7.5
c.
x = 300 /7.5
c.
x = 40
d.
4.05/6.3 = x/0.7
d.
x = (4.05* 0.7)/6.3
d.
x = 2.835 /6.3
d.
x = 0.45
Exercice 20 :
a.
24/75 = (3*2*2*2) / ( 5*5*3) = 8/25
b.
72/18 = (2*4*3*3) / (3*3*2) = 4/1=4
c.
100/56 =
(5*2*5*2) / (7*4*2) = 50/28 = (5*2*5) / ( 2*14) = 25/14
d.
36/54 = (6*3*2) / (6*3*3) = 2/3
2 votes
Thanks 1
JMangeDesFrites75
Mercii et les * c'est le signe multiplier ? et les / sa veut dire diviser ?
toumayanlaura
OUI C'EST CA
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Qu'est ce qu'un "Tag de Confirmation" ? merci
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Bonsoir, C'est pour demain !!!!!! /!\ Je doit trouver les contraire de: long;young;straight. Merci !!
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Bonjouuuuuuur, Vous pouvez m'aidez a faire un portrait araucan en 5 touche ( 4 portrait) merciii
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on nomme x le nombre recherché dans chacun des cas.
a. 5.7/x = 1.9/4
a. x = (5.7*4)/ 1.9
a.x = 22.8 /1.9
a.x = 12
b. 0.82/1.3 = 0.41/x
b. x =(1.3*0.41)/0.82
b. x =0.533 / 0.82
b. x = 0.65
c. 7.5/20 = 15/x
c. x = (20*15) / 7.5
c. x = 300 /7.5
c. x = 40
d. 4.05/6.3 = x/0.7
d. x = (4.05* 0.7)/6.3
d. x = 2.835 /6.3
d. x = 0.45
Exercice 20 :
a.24/75 = (3*2*2*2) / ( 5*5*3) = 8/25
b.72/18 = (2*4*3*3) / (3*3*2) = 4/1=4
c. 100/56 = (5*2*5*2) / (7*4*2) = 50/28 = (5*2*5) / ( 2*14) = 25/14
d. 36/54 = (6*3*2) / (6*3*3) = 2/3