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What is the length of DC? (picture)

What is the length of DC? (picture)-example-1
User Glanden
by
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1 Answer

1 vote

DC =
(5)/(2) = 2.5

since the triangles are similar then the ratios of corresponding sides are equal


(AC)/(AD) =
(BC)/(DE)


(7.5+DC)/(7.5) =
(8)/(6) (cross-multiply )

45 + 6DC = 60

6DC = 60 - 45 = 15 ( divide both sides by 6 )

DC =
(5)/(2)



User Danieltalsky
by
5.4k points