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Wittaler [7]
3 years ago
9

Can someone help me figure out how to do this?

Mathematics
2 answers:
baherus [9]3 years ago
7 0
It’s d I believe I think I’m not so sure tho I’m pretty sure
ycow [4]3 years ago
5 0
Yes! It is D sorry I’m late
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Expand by distributing terms.

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3 0
3 years ago
In △ABC, AD and BE are the angle bisectors of ∠A and ∠B and DE ║ AB . Find the length of DE if perimeter of ABDE is 30 cm and AB
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DE = 6 cm

Step-by-step explanation:

Let DE = x cm.

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As AD is an angle bisector of ∠A, therefore m∠EAD = m∠DAB ; Since BE is an angle bisector of ∠B ⇒ m∠ABE = m∠EBD.

Therefore, from (1) We get ,  m∠EAD = m∠ADE and m∠EBD = m∠BED.

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So AE = DE = DB = x, and since the perimeter of ABDE is 30 cm, then

12 + x + x + x = 30

⇒ 12 + 3x = 30

⇒ x = 6

Hence, the length of DE is 6 cm.


8 0
3 years ago
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