math
posted by anonymous. .
Right triangle ABC is similar to triangle XYZ. If XY = 35 cm,
YZ = 70 cm, and AB = 5 cm, then what is the length of line segment BC?

AB/XY = BC/YZ,
5/35 = BC/70,
Multiply both sides by 70:
BC = 70*5/35 = 10 cm.
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