Предмет: Алгебра, автор: ilykee228

Найдите область определения функции

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Автор ответа: Эксперт5

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$y= sqrt{2-7x}\\2-7x geq 0\7x leq 2\x leq frac{2}{7}\xin(-infty; frac{2}{7}]$

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Предмет: Английский язык, автор: Аноним

Task 1. Answer the questions:
1. Which disease kills more people in Britain: cancer or heart disease?
2. How many adults die of heart disease in Britain every hour?
3. Do women have more heart attacks than men?
4. Where do people have more heart attacks – the UK or Japan?
5. How many grams of salt is it good to eat every day?
6. How many portions of fruit and vegetables is it good to eat every day?

Task 2. Read the text.

Text

Heart desease kills more people in Britain than any other disease, including
cancer. One adult dies every three minutes from heart disease and it’s more
common in men than women. Age is also important. 80% of people who die of
heart attacks are 65 or older. And it’s an amazing fact that five times more men
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to help your heart stay healthy. Here are our top tips for a healthy heart!

 Stop smoking. Everyone knows that cigarettes give you cancer, but
the’re also bad for your heart. If you only do one thing to help your
heart, do this!
 Do more exercise. Regular exercise (four times a week for 30
minutes) is very good for your heart.
 Don’t eat a lot od fried food and only eat red meat once a week. This
type of food is bad for your heart because it’s high in fat.
 Eat fish twice or three times a week. It’s good for your heart because
it’s low in fat and high in Omega-3 oils.
 Don’t eat a lot of salt. We only need about 1g of salt a day- most
people eat about 6g!
 Eat more fruit and vegetables (at least five portions a day).
 Lose some weight. Overweight people have more heart attacks!
 Don’t drink a lot of alcohols – but a glass of red wine every day can
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