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raketka [301]
3 years ago
5

What us the length of the longer side?

Mathematics
1 answer:
julsineya [31]3 years ago
3 0
The perimeter:
P=2\cdot(3x+3)+2\cdot2x=6x+6+4x=10x+6\\\\P=146\ units\to10x+6=146\ \ \ |-6\\\\10x=140\ \ \ |:10\\\\x=14\ units
The length of the longer side:
3x+3=3\cdot14+3=42+3=45\ units

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