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Slav-nsk [51]
3 years ago
9

The question is a screenshot

Mathematics
2 answers:
Alekssandra [29.7K]3 years ago
8 0
If I remember correctly I think its B. 15 mm
mel-nik [20]3 years ago
7 0
B, because 45/21 = 2.142857143... And 2.142857143... × 7 =15mm

So it's B
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