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MakcuM [25]
3 years ago
11

Pre ap geometry, please help with number 11.​

Mathematics
2 answers:
arlik [135]3 years ago
5 0
Perimeter is the sum of all three sides so in this case x+(3x+2)+(3x+2).
They also gave us the perimeter which is 39 so
39= x+(3x+2)+(3x+2)
Simplify so 39=7x+4. [x+3x+3x=7x and 2+2=4]
Then get x by itself so subtract 4 from both sides.
35=7x
Then divide both sides by 7 to get x by itself.
Which leaves us with
X=5
Viefleur [7K]3 years ago
4 0
The guy above me is correct. I’m pretty sure I ended up with x=5 too.
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