03-05-2017
Mathematics

contestada

How do I solve this

How do I solve this class=

Respuesta :

03-05-2017

If ABC is ~ to DEF then
AB is ~ to DE
35~x and
BC is ~ to EF
30~15
30/2= 15 So 35/2= 17.5

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03-05-2017

Both triangles are similar because of angle angle similarity.

So you can just make a proportion.

[tex] \frac{CB}{BA} = \frac{FE}{x} [/tex]

Insert the numbers:
[tex] \frac{30}{35} = \frac{15}{x} [/tex]

Cross multiply: 30x = 520
x = 17.5

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