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10-04-2018
Mathematics

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Need help with my college test?

Find the indicated part for the similar triangles.

AB= 12 cm
BC= 30 cm
DE= 21.5 cm
Find EF?

Need help with my college testFind the indicated part for the similar triangles AB 12 cmBC 30 cmDE 215 cmFind EF class=

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10-04-2018

The ratio between the triangles is 21.5 : 30 which is 43 : 60

We can use this proportion to find EF:

12 : x = 60 : 43

x = 43/5

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