Answer:
6
Explanation:
We can begin by finding EA, which is 1 unit.
Using similar triangles AEB and ADC, we can set up a ratio.
1:6=2:x+6.
if a:b=c:d, then ad=bc
x+6=12
x=6
Feel free to tell me if I did anything wrong! :)
C
since the triangles are similar then the ratios of corresponding sides are in proportion, that is
= ( substitute values )
=
= ( cross- multiply )
x + 6 = 12 ( subtract 6 from both sides )
x = 6
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