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emmainna [20.7K]
3 years ago
12

PLZZZZZ NEED HELP!!!!!!!

Mathematics
2 answers:
andriy [413]3 years ago
6 0
15 cm because they are similar, and EF is the same line as BC
VLD [36.1K]3 years ago
6 0
Set up a ratio between corresponding sides

9/12 = 15/x - the cross product will be equal since the fractions are equal

9x = 180
x = 180/9 = 20
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