Réponse :
Explications étape par étape :
1) Aire AMNP = AM x AP
AM = 4
AP = AD - PD = 6 - x
Aire AMNP = 4 * (6 - x)
Réponse c.
2)
Aire ABCD = BC² = 6² = 36
Aire AMNP = 1/3 x aire ABCD
→ 4 * (6 - x) = 36 x 1/3
→ 4*6 - 4*x = 12
→ 24 - 4x = 12
→ -4x = 12 - 24 = -12
→ x = (-12)/(-4) = 3
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Réponse :
Explications étape par étape :
1) Aire AMNP = AM x AP
AM = 4
AP = AD - PD = 6 - x
Aire AMNP = 4 * (6 - x)
Réponse c.
2)
Aire ABCD = BC² = 6² = 36
Aire AMNP = 1/3 x aire ABCD
→ 4 * (6 - x) = 36 x 1/3
→ 4*6 - 4*x = 12
→ 24 - 4x = 12
→ -4x = 12 - 24 = -12
→ x = (-12)/(-4) = 3