Предмет: Математика, автор: izelhmidzad

Определите знак произведения,если: 1) 3 числа отрицательные, 4 числа положительные 2) 6 чисел отрицательных 1 положительное 3) 41 отрицательных чисел и несколько положительных 4) 40 отрицательных чисел, и несколько положительных

Ответы

Автор ответа: Dasha36361

Ответ: 1) +

2) -

3) -

4) -

izelhmidzad: 4 не правильно

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помогите перевести, пожалуйста:
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Of course, travelling by plane is the fastest, but it is also the most expensive. That's why if people have time they go by train. It is one of the most popular means of travelling. Trains go slower than planes, but you can see much more interesting places of the country you are travelling through. Modern trains are very comfortable and you can enjoy even the longest journey.

Travelling by sea is popular mostly for pleasure trips. Onboard large ships and small river boats people can visit foreign countries and different places of interest within their own country. A trip by sea is usually called a voyage or a cruise.

Buses also can take you to any place you wish. It can be a trip not far from your home or a long journey even to a foreign country. Modern buses have comfortable seats, video and phone, you can have hot tea or coffee, drinks and snack. Tourist groups usually use buses to visit foreign countries and different places of interest.

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If you feel like travelling by plane, by train or by bus, you have to choose a flight or a line, to go to a ticket office and buy a single or a return ticket. Sometimes you have to change trains or buses. But usually travellers prefer tickets for through trains or buses. Then you take your luggage and try not to miss your plane, train or bus. They usually arrive at the airport or the railway station in time. And your wonderful journey begins. Have a nice journey.

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