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периметр равнобедренного треугольника равен 45 см найдите его основание если оно в 4 раза меньше боковой стороны
Ответы 2
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4х+4х+х=459х=45х=5Ответ 5
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Автор:
weavergwfj - 5 лет назад
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Пусть основание=х см, тогда боковая сторона=4х.х+(4х*2)=459х=45х=5Отв: основание 5 см
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Автор:
bruce9 - 5 лет назад
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THE BERMUDA TRIANGLE
At 2 pm on 5 December 1945, five US bombers took off from Fort Lauderlale in the USA for a training flight in perfect weather. Shortly afterwards, the pilots radioed that their flight instruments were all malfunctioning. Two hours after take-off, all contact with the planes was lost. A reconnaissance plane was immediately dispatched to search for the missing planes. Within 20 minutes, radio contact with it had also been lost. No trace of any of the planes was ever found. In all, six planes and 27 men had vanished into the air.
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The losses of boats and planes in that area defy explanation. The disasters are the origin of a new phrase in the English language – the Bermuda Triangle and this phrase has entered legend. The Bermuda Triangle has been called the 'Devils’ Triangle, the Triangle of Death, the Graveyard of the Atlantic. It has swallowed up 140 ships and planes and more than 1,000 people. Today many airmen and sailors are still afraid of that area of the Atlantic Ocean.
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