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Aliun [14]
2 years ago
11

What does x equal? no step by step required.

Mathematics
2 answers:
SpyIntel [72]2 years ago
7 0

Answer:

x=12

Step-by-step explanation:

This is the triangle similarity theorem. First, you make a proportion:

------------------------------------------------------------------------------------

and then solve: 21=x-9

which becomes x=12

sleet_krkn [62]2 years ago
5 0

Answer:

x=12

Step-by-step explanation:

yes

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