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Damm [24]
3 years ago
10

Hey there! I’m having a bit of trouble with this one, I think I’ve been looking at this for too long. If you could give me an ex

planation, I would be appreciate it! Thanks in advance! This is a practice test.

Mathematics
1 answer:
Kipish [7]3 years ago
4 0
AD = 42-x

The bisector of an angle of a triangle divides the opposite side into segments that are proportional to the adjacent sides  ⇒
AB/BC = AD/DC
36/27 = (42-x)/x
36x = 27(42-x)
36x = 1134 - 27x
36x + 27x = 1134
63x = 1134
x = 1134/63
x = 18
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