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Mathematics
Alexus
23 January, 20:58
12h - 3 > 15h or 5 > - 0.2h + 10
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Nathalie Best
23 January, 23:42
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Given composite inequality : 12h - 3 > 15h or 5 > - 0.2h + 10.
Let us solve them one by one.
12h - 3 > 15h
Subtracting 12h from both sides, we get
12h-12h - 3 > 15h - 12h
-3 > 3h
Dividing both sides by 3, we get
-3/3 > 3h/3
-1 > h.
Solving 5 > - 0.2h + 10.
Adding - 0.2h on both sides, we get
5 + 0.2h > - 0.2h+0.2h + 10.
5 + 0.2h > 10.
Subtracting 5 from both sides, we get
5-5 + 0.2h > 10-5.
0.2h > 5
Dividing both sides by 0.2, we get
0.2h/0.2 > 5/0.2
h > 25.
Therefore - 1>h or h>25.
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