4 years ago

BC is parallel to DE What is AC?

Mathematics

2 answers:

Olenka [21]4 years ago

6 0

Answer:

the answer is indeed 12

DaniilM [7]4 years ago

3 0

ΔABC ~ ΔADE
AC/AE = AB/AD
AC/(AC+15) = 8/18
18AC = 8(AC+15)
18AC = 8AC + 120
18AC - 8AC = 120
10AC = 120
AC = 120/10
AC = 12

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