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3 years ago

What is the length of segment DC?

Mathematics

1 answer:

erik [133]3 years ago

5 0

Since BD is the bisector of angle B, the segments to its left are proportional to those to its right. The proportion can be written at least 4 ways, but it is convenient to write it with x in a numerator.

x/(15 cm) = (5.6 cm)/(7 cm)
Multiplying by 15 cm, we get
x = (15 cm)×(5.6/7) = 12 cm

The appropriate choice is
D. 12 cm

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