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olga291200
@olga291200
December 2021
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На отрезке АВ длиной 21 см выбрана точка К. Найдите длины отрезков АК и ВК ,если [tex] \frac{1}{4} [/tex] АК равна [tex] \frac{1}{3} [/tex] ВК
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drborman2001
AB=AK+BK
AK/4=BK/3 => AK=4BK/3
AB=4BK/3+BK=7BK/3
BK=3AB/7=3*21/7=9 см
AK=4*9/3=12 см
13 votes
Thanks 15
olga291200
Спасибо огромное!
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Answers & Comments
AK/4=BK/3 => AK=4BK/3
AB=4BK/3+BK=7BK/3
BK=3AB/7=3*21/7=9 см
AK=4*9/3=12 см