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dalexandre95
@dalexandre95
January 2021
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Bonjour! J'ai un exercice de 4eme a faire... Si vous pouvez m'aider pour ceci :
Ecrire sous la forme 10n :
a)10⁸/10² b) 10⁵/10⁸ c)10⁻³/10⁵ d)10⁻⁷³/10⁻³ e)10⁴/10⁻₄
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rosiemuller2000
Verified answer
Coucou
a)
=
b)
=
c)
=
d)
=
e)
=
2 votes
Thanks 1
dalexandre95
Merci!
rosiemuller2000
De rien ;)
Anna1712
Bonjour,
Il faut se servir du fait que (10^n)/(10^m) = 10^(n-m)
Donc,
a) (10^8)/(10^2) = 10^(8-2) = 10^6
b) (10^5)/(10^8) = 10^(5-8) = 10^(-3)
c) (10^(-3))/(10^5) = 10^(-3-5) = 10^(-8)
d) (10^(-73))/(10^(-3)) = 10^(-73+3) = 10^(-70)
e) (10^4)/(10^(-4)) = 10^(4+4) = 10^8
^ signifie "puissance"
Bonne journée ;-)
0 votes
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Verified answer
Coucoua)
=
b)
=
c)
=
d)
=
e)
=
Il faut se servir du fait que (10^n)/(10^m) = 10^(n-m)
Donc,
a) (10^8)/(10^2) = 10^(8-2) = 10^6
b) (10^5)/(10^8) = 10^(5-8) = 10^(-3)
c) (10^(-3))/(10^5) = 10^(-3-5) = 10^(-8)
d) (10^(-73))/(10^(-3)) = 10^(-73+3) = 10^(-70)
e) (10^4)/(10^(-4)) = 10^(4+4) = 10^8
^ signifie "puissance"
Bonne journée ;-)