190 minutes = _________ hours ________minutes
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Working be x and classes be y
- x≤40
- x≥30
So
- 30≤x≤40
And
- 2≤y≤6
Graph both .
The solution region is the best way.(Blue part)
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Working be x and classes be y
So
And
Graph both .
The solution region is the best way.(Blue part)