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mrs_skeptik [129]
3 years ago
11

Please help me with this math

Mathematics
1 answer:
mylen [45]3 years ago
6 0
Because ΔCDF is similar to ΔBDE, the corresponding sides are proportional
CD:BD=FD:ED
(3.63+5.19):5.19=(x+4.45):4.45
5.19(x+4.45)=(3.63+5.19)*4.45
5.19x+5.19*4.45=3.63*4.45+5.19*4.45
5.19x=3.63*4.45=16.1535
x≈3.11

you can also do DB:BC=DE:EF. You'll get the same result.
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