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timama [110]
3 years ago
9

Can someone please help me, I don't know where to begin​

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
7 0

Answer:

x=20

Step-by-step explanation:

sum of all the sides is equal to 180degrees

group like terms

solve the question

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Serena is building a bookcase she cuts two pieces of wood from one board one piece is 1 7/8 feey long and another is 3.5 ft long
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