2- La longueur d'un rectangle mesure 2 cm de plus que le triple de sa largeur. Si le périmètre de ce rectangle est supérieur à 1
2 cm, mais d'au maximum 48 cm, dans quel intervalle se situe la largeur de ce rectangle?
1 answer:
Answer:
5 < L < 18,5
5 < L < 18,52 < W < 5,5
Step-by-step explanation:
longeur = length = L
largeur = width = W
L = 3W +2
12 < 2L+2W < 48
———————————————
12 < 2*(3W+2)+2W < 48
12 < 6W+4 +2W < 48
12 < 8W+4 < 48
8 < 8W < 44
2 < W < 5,5
———————————————
12 < 2L+2W < 48
L = 3W +2
<em>L</em><em> </em><em>-</em><em> </em><em>2</em><em> </em><em>=</em><em> </em><em>3</em><em>W</em>
<em>L</em><em>/</em><em>3</em><em> </em><em>-2</em><em>/</em><em>3</em><em> </em><em>=</em><em> </em><em>W</em>
12 < 2L +2*(L/3 -2/3) < 48
12 < 2L + ⅔L -4/3 < 48
12 < 2⅔L -4/3 < 48
13⅓ < 2⅔L < 49⅓
5 < L < 18,5
hope it helps.
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Answer:
ERWAESDCF
Step-by-step explanation:
Multiply both sides by 3 and get 2x - 20 = 6x
Then subtract 2x from both sides and get
-20 = 4x. Divide both sides by 4 and then get x = -5
Hi there, the two numbers would be 5 and 3 because 5+3=8 and 5*3=15. So, the two numbers are 5 and 3