violects
violects
16-01-2021
Mathematics
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123JD2004
123JD2004
17-01-2021
the perimeter means you add up all the sides
so you do
(12b-8) + (12b-8) + (9b+8)
now you just add the like terms
12b+12b+9b = 33b
-8+-8+8= -8
so the perimeter is 33b-8
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