Réponse :
Explications étape par étape
Bonjour
Écriture décimale :
N = (3,6 x 10^4)/(4 x 10^6)
N = (9 x 4)/(10 x 4) x 10^(4-6)
N = 9/10 x 10^(-2)
N = 9 x 10^(-1-2)
N = 9 x 10^(-3)
N = 0,009
O = (3,2 x 10^5) / (2 x 10^6)
O = 3,2/2 x 10^(5-6)
O = 1,6 x 10^(-1)
O = 0,16
P = (12 x 10^(-4) x 5 x 10^6) / (15 x 10^3 x 2 x 10^2)
P = (12 x 5) / (15 x 2) x 10^(-4+6-3-2)
P = 12/2 x 5/15 x 10^(-9+6)
P = 6 x 1/3 x 10^(-3)
P = 2 x 10^(-3)
P = 0,002
Q = 10^(-4) x 0,2 x 10^3 x 1/10^2
Q = 0,2 x 10^(-4+3-2)
Q = 2/10 x 10^(-3)
Q = 2 x 10^(-1-3)
Q = 2 x 10^(-4)
R = 3^2 x 2 - 125 x 10^(-1)
R = 9 x 2 - 12,5
R = 18 - 12,5
R = 5,5
S = (5 x 10^(-14)) x (0,4 x 10^16) x (0,00056/7)
S = (5 x 0,4 x 0,00056 / 7) x 10^(-14+16)
S = (5 x 4/10 x 8 x 7 x 10^(-5) / 7) x 10^2
S = 160 x 10^(-1-5+2)
S = 160 x 10^(-4)
S = 0,00016
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Réponse :
Explications étape par étape
Bonjour
Écriture décimale :
N = (3,6 x 10^4)/(4 x 10^6)
N = (9 x 4)/(10 x 4) x 10^(4-6)
N = 9/10 x 10^(-2)
N = 9 x 10^(-1-2)
N = 9 x 10^(-3)
N = 0,009
O = (3,2 x 10^5) / (2 x 10^6)
O = 3,2/2 x 10^(5-6)
O = 1,6 x 10^(-1)
O = 0,16
P = (12 x 10^(-4) x 5 x 10^6) / (15 x 10^3 x 2 x 10^2)
P = (12 x 5) / (15 x 2) x 10^(-4+6-3-2)
P = 12/2 x 5/15 x 10^(-9+6)
P = 6 x 1/3 x 10^(-3)
P = 2 x 10^(-3)
P = 0,002
Q = 10^(-4) x 0,2 x 10^3 x 1/10^2
Q = 0,2 x 10^(-4+3-2)
Q = 2/10 x 10^(-3)
Q = 2 x 10^(-1-3)
Q = 2 x 10^(-4)
R = 3^2 x 2 - 125 x 10^(-1)
R = 9 x 2 - 12,5
R = 18 - 12,5
R = 5,5
S = (5 x 10^(-14)) x (0,4 x 10^16) x (0,00056/7)
S = (5 x 0,4 x 0,00056 / 7) x 10^(-14+16)
S = (5 x 4/10 x 8 x 7 x 10^(-5) / 7) x 10^2
S = 160 x 10^(-1-5+2)
S = 160 x 10^(-4)
S = 0,00016