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Rose08
@Rose08
April 2019
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Pouvez vous m'aider pour les exercices 13 a 16 s'il vous plait ! Urgent !!
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PicDream
13)
a) x+4 ≥ 2
x ≥ -2
b) x-4 ≤ 2
x ≤ 6
c) 4-x > 2
x < 2
d) -4x < 2
x >-1/2
14) x+5 ≥ 3
x ≥ -2
x-7 ≤ 2
x ≤ 9
2-x > 1
x < 1
2 -x < 3
x > -1
15) 7 ≥ x+2
x ≤ 5
4 ≤ x-5
x ≥ 9
5 > 1-x
x > -4
8 < 9 -x
x < 1
16) 5x+2>17 5x>15 donc x >3
3x+5 ≤ 20 3x ≤ 15 donc x ≤ 3
4x-5 > 35 4x > 30 donc x > 30/4
7x-5 ≥ 44 7x ≥ 39 donc x ≥ 39/7
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a) x+4 ≥ 2
x ≥ -2
b) x-4 ≤ 2
x ≤ 6
c) 4-x > 2
x < 2
d) -4x < 2
x >-1/2
14) x+5 ≥ 3
x ≥ -2
x-7 ≤ 2
x ≤ 9
2-x > 1
x < 1
2 -x < 3
x > -1
15) 7 ≥ x+2
x ≤ 5
4 ≤ x-5
x ≥ 9
5 > 1-x
x > -4
8 < 9 -x
x < 1
16) 5x+2>17 5x>15 donc x >3
3x+5 ≤ 20 3x ≤ 15 donc x ≤ 3
4x-5 > 35 4x > 30 donc x > 30/4
7x-5 ≥ 44 7x ≥ 39 donc x ≥ 39/7