Вопрос школьника по предмету Математика
На завод отправили 47 вагонов с углём — по 60 т угля в каждом, и ещё 66 вагонов с углём — по 90 т угля в каждом.
Сколько всего тонн угля отправили на завод?
Ответ учителя по предмету Математика
Ответ:
1). 60×47=2 820 (т.) — в 47 вагонах .
2). 90×66=5 940(т.) — в 66 вагонах.
3). 2 820 + 5 940 = 8 760 (т.) — во всех вагонах .
Ответ : всего на завод отправили 8 760 тонн угля.
Задача очень лёгкая, я уверенна, на 1000000 %
Не переживай, у меня всё ПРАВИЛЬНО )))
Пошаговое объяснение:
Пожалуйста, поставь, мой ответ как лучший , мне оооооочень надо .
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Thera Theory.
This beautiful Aegean island has been charged with an ancient and terrible crime: its eruption supposedly wiped out the peace-loving Minoan civilization on Crete. But the latest evidence says «not guilty».
In 1939 Greek archaeologist Spyridon Marinatos proposed that the relationship between the eruption of Thera and the destruction of Minoan Crete was indeed real.
He believed in the existence of volcanic ashfalls that blanketed the Minoan fields, of giant waves that smashed Minoan ships and ports, and of earthquakes that shook Minoan buildings, toppling oil lamps and igniting conflagrations that levelled the palaces.
Marinatos’s eruption theory was always controversial and he himself realized he needed to find more facts. In the mid-1960s he began looking on Thera for ancient settlements.
His discovery was sensational — Marinatos found two-storey houses well preserved in the volcanic ash.
But Marinatos found no skeletons, apparently because the inhabitants had had warning of the eruption and had fled: and he found no written records.
Marinatos knew he needed ship from outside archaeology. So he encouraged a group of geologists and other scientists to study Thera.
Some of the first bad news was reported in the early 1970s by a husband-and-wife team of geologist, Charles Vitaliano and Dorothy Vitaliano. Marinatos had urged them to search for Theran ash at Minoan sites, hoping they would find heavy ashfalls dating from 1450 B.C. After years of collecting and analyzing samples, the Vitalianos found ash, all right, but none anywhere near the date that would support Marinatos’s theory.
2)от куска медной проволовки длиной 35м и массой 840г отрезан кусок длиной 24,5м.Чему равна масса остатка?
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