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ishbulatov2001
@ishbulatov2001
August 2022
1
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50 баллов за решение.
Нужно 1 и 3 задание сделать.
8 класс
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nafanya2014
Verified answer
1
AB/A1B1=AC/A1C1=2/3⇒BC/B1C1=2/3⇒B1B1=10*3/2=15
3
ΔMBN∞ΔABC по 2 равным углам⇒k=MN/AC=10/15=2/3⇒
BM/AB=BN/BC
BM/(BM+3)=8/12
12BM=8BM+24
4BM=24
BM=6
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Answers & Comments
Verified answer
1AB/A1B1=AC/A1C1=2/3⇒BC/B1C1=2/3⇒B1B1=10*3/2=15
3
ΔMBN∞ΔABC по 2 равным углам⇒k=MN/AC=10/15=2/3⇒
BM/AB=BN/BC
BM/(BM+3)=8/12
12BM=8BM+24
4BM=24
BM=6