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dinuxan95
@dinuxan95
January 2021
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AIDE SVP CALCULS
Calculer A et donner le résultat sous la forme d'une raction irréductible .
Calculer B et donner le résultat en notation scientifique .
Merci de m'aider
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nini999
Verified answer
Bonsoir :
Calcule A
A = 24/35 - (3/5 - 9/7) / 2 - 11/4
A = 24/35 - (21/35 - 45/35) / 8/4 - 11/4
A = 24/35 - (-67/35 )/ -3/4
A = 24/35 - (-67/35 × 4/-3)
A = 24/35 - (268/105)
A = 24/35 - 268/105
A = 72/105 - 268/105
A = -34/105
Calcule B
L'écriture scientifique : 1 ≤ x < 10
Alors :
B = 7 × 10⁻¹² × 0.04 × 10¹⁵ / 2 × 10⁻⁴ × 2.5 × (10⁵)⁻³
B = 7 × 0.04 × 10⁻¹² × 10¹⁵ / 2 × 2.5 × 10⁻⁴ × 10⁵ˣ⁽⁻³⁾
B = 0.28 × 10⁻¹²⁺¹⁵ / 5 × 10⁻⁴ × 10⁻¹⁵
B = 0.28 × 10³ / 5 × 10⁻⁴⁺⁽⁻¹⁵⁾
B = 0.28 × 10³ / 5 × 10⁻⁴⁻¹⁵
B = 0.28 × 10³ / 5 × 10⁻¹⁹
B = 0.056 × 10³⁻⁽⁻¹⁹⁾
B = 0.056 × 10³⁺¹⁹
B = 0.056 × 10²²
B = 5.6 × 10⁻² × 10²²
B = 5.6 × 10⁻²⁺²²
B = 5.6 × 10²⁰ ---> L'écriture scientifique
J’espère t'avoir t'aider
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Thanks 1
dinuxan95
merci pour ta réponse
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Verified answer
Bonsoir :Calcule A
A = 24/35 - (3/5 - 9/7) / 2 - 11/4
A = 24/35 - (21/35 - 45/35) / 8/4 - 11/4
A = 24/35 - (-67/35 )/ -3/4
A = 24/35 - (-67/35 × 4/-3)
A = 24/35 - (268/105)
A = 24/35 - 268/105
A = 72/105 - 268/105
A = -34/105
Calcule B
L'écriture scientifique : 1 ≤ x < 10
Alors :
B = 7 × 10⁻¹² × 0.04 × 10¹⁵ / 2 × 10⁻⁴ × 2.5 × (10⁵)⁻³
B = 7 × 0.04 × 10⁻¹² × 10¹⁵ / 2 × 2.5 × 10⁻⁴ × 10⁵ˣ⁽⁻³⁾
B = 0.28 × 10⁻¹²⁺¹⁵ / 5 × 10⁻⁴ × 10⁻¹⁵
B = 0.28 × 10³ / 5 × 10⁻⁴⁺⁽⁻¹⁵⁾
B = 0.28 × 10³ / 5 × 10⁻⁴⁻¹⁵
B = 0.28 × 10³ / 5 × 10⁻¹⁹
B = 0.056 × 10³⁻⁽⁻¹⁹⁾
B = 0.056 × 10³⁺¹⁹
B = 0.056 × 10²²
B = 5.6 × 10⁻² × 10²²
B = 5.6 × 10⁻²⁺²²
B = 5.6 × 10²⁰ ---> L'écriture scientifique
J’espère t'avoir t'aider