Answer:
BC = 24
Step-by-step explanation:
FD = 36, FE = 15 and CD = 18
By secant theorem.
DE • DF = CD • DB
(36 - 15) • 36 = 18 • DB
DB = 42
BC = DB - CD
BC = 42 - 18
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-4
a) there are 6 red out of 18 total. 6/18 = 1/3
b) there are 14 that are not blue out of 18. 14/18 = 7/9
5400
4500 multiplied by 1.2