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Помогите пожалуйста сложить дробь 7/34+5/51 заранее спасибо.
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Предмет:
Математика -
Автор:
leyla - 5 лет назад
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Ответы 6
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не очень понял
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Автор:
bub3iod - 5 лет назад
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0
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не 734 и 551, а семь тридцать четвертых и пять песят первых.
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Автор:
foxypotg - 5 лет назад
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0
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забыл черту поставить
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Автор:
sloanesacw - 5 лет назад
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0
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31/102
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Автор:
evehumphrey - 5 лет назад
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0
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7/34 + 5/51 = 21/102 + 10/102 = 31/102 = 0,303922
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Автор:
addisynvgia - 5 лет назад
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0
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Найдем наименьшее общее кратное знаменателей дробей 734 и 551
НОК(34,51) = 102
102/34 = 3 — дополнительный множитель первой дроби
102/51 = 2 — дополнительный множитель второй дроби
734 = 7·334·3 = 21102551 = 5·251·2 = 101022.) Сложим дроби с равными знаменателями:
21102 + 10102 = 21 + 10102 = 31102-
Автор:
ronald - 5 лет назад
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0
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Прочитайте текст. Определите, какие из приведённых утверждений 10–17 соответствуют содержанию текста (1 – True), какие не соответствуют (2 – False) и о чём в тексте не сказано, то есть на основании текста нельзя дать ни положительного, ни отрицательного ответа (3 – Not stated). В поле ответа запишите одну цифру, которая соответствует номеру правильного ответа.
Doughnuts
Doughnuts, a delicious snack, need no special occasion to eat them; they are the side order to coffee, tea or milk and can easily make you popular around the office. They are consumed all over the world – the USA alone makes more than 10 billion doughnuts a year.
The origin of the doughnut is heavily debated. The idea of fried dough does not belong to one country or culture. The exact place, time and person responsible for creating the doughnut is also unknown. However, the two countries generally associated with this sweet snack are the United States and Holland.
Records show that the Dutch were making olykoeks, or ‘oil cakes’, as early as the mid-19th century. These early doughnuts were simply balls of cake fried in pork fat until golden brown. However, there was a problem with doughnuts. The centre of the doughnuts did not cook as fast as the outside and remained mostly uncooked. That was the reason why the cakes were stuffed with fruit, nuts, or other fillings that did not take long to cook.
The doughnuts got a hole inside only after their arrival in America. There is a very popular half-true story about a sea captain and his mother, which explains how it happened. As legend has it, Mrs. Gregory sent her son, Captain Hanson Gregory, on one of his sea voyages with several doughnuts and her recipe to make more. But Hanson didn't like nuts, so he took them out and ordered the ship's cook to prepare all doughnuts with holes in the centre.
We may never know if Captain Gregory really invented the first doughnut hole. However, we can be sure that this hole was a very positive change. Now it was much easier to get well-done and cooked-through doughnuts.
By the 1920s, doughnuts were being mass-produced in America. Their association with breakfast was only the beginning and the doughnut was very popular as a snack in theatres. To satisfy the growing need for doughnuts in one New York neighborhood, a Russian immigrant named Adolph Levitt created the first doughnut machine. In 1934 the doughnut was declared ‘the hit food of the Century Of Progress’. Levitt made twenty-five million dollars annually from the sale of his doughnut machines to bakeries.
The 1940s and 50s, saw the arrival of doughnut chains such as Krispy Kreme Doughnuts and Dunkin' Donuts. They say it was the Dunkin Donuts chain that popularized the 'donut' spelling of the word ‘doughnut’ by making it part of its name! Today, most writers outside the USA still prefer ‘doughnut’. ‘Donut’ appears about a third of the time in published American writing. However, as ‘donut’ is a simpler spelling it will certainly become more commonly used.
The Americans are so fond of doughnuts that they celebrate National Doughnut Day. It is on the first Friday in June and honours the ‘Doughnut Girls’. These were the female volunteers who made doughnuts and served them to American soldiers fighting in France during World War I. The French women wanted to bring comfort and optimism into soldiers’ life by giving them a taste of the food they had back home.
The USA produces more doughnuts than all the other countries in the world.
1)
True
2)
False
3)
Not stated
The fillings in doughnuts were first added to make them well-cooked.
1)
True
2)
False
3)
Not stated
Mrs. Gregory was the best doughnut cook in her town?
1)
True
2)
False
3)
Not stated
Mrs. Gregory invented doughnuts with a hole in the centre.
1)
True
2)
False
3)
Not stated
At the beginning of the 20th century, doughnuts became very popular in the United States.
1)
True
2)
False
3)
Not stated
The doughnut machine brought its inventor lots of money.
1)
True
2)
False
3)
Not stated
The spelling ‘donut’ is more popular in the US than anywhere else.
1)
True
2)
False
3)
Not stated
The ‘Doughnut Girls’ was the name for women who served in the army during World War I.
1)
True
2)
False
3)
Not stated
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Предмет:
Английский язык -
Автор:
cassiemduz - 5 лет назад
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Ответов:
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