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МатематикаАвтор:
анонимОбозначим через х вес яблок, которые были в первом ящике, а через у вес яблок, которые были во втором ящике.
После того как из первого ящика во второй ящик переложили 4 3/4 кг яблок , что составляет 19/4 кг, в первом ящике вес яблок уменьшился на 4 3/4 кг и составил х - 19/4 кг, в во втором ящике вес яблок увеличился на 4 3/4 кг и составил у + 19/4 кг.
Согласно условию задачи, в первом ящике и во втором ящиках оказалось по 16 кг яблок, следовательно, можем записать следующие соотношения:
х - 19/4 = 16;
у + 19/4 = 16.
Находим х и у:
х = 16 + 19/4 = 16 + 4 + 3/4 = 20 3/4;
у = 16 - 19/4 = 16 - 4 - 3/4 = 11 1/4.
Ответ: в первом ящике было 20 3/4 кг яблок, во втором ящике было 11 1/4 кг яблок.
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помогите пж английский 11 класс
4.Choose the correct answer.
1 Hi. I would like to book / close a double room for the 23 rd to the 28th
.2 I am too lazy to get dressed and drive to the restaurant. I am going to eat out / in tonight.
3 I find staying at a bed / tent and breakfast is cosier than staying at a large hotel.
4 I can’t believe I missed / lost my plane to Jordan. Now I will never see Petra!
5 It took him a lot longer to get here because he came on / by foot.
6 I want to go somewhere different this time. Every year we spend / go our holiday at the
village.
Read the text. Then do exercise 1.
My friends and I had been talking about taking a trip to Peru for years until we finally decided to
do it. This spring we’ll be flying over the Atlantic on our way to Lima, the capital city of Peru.
We’ll spend the next twelve days visiting places we’ve only seen in pictures. To say that we are
excited would be an understatement.
We’ve booked a four-star hotel in Lima, where we’ll be staying for two days. We wanted to rent
rooms somewhere safe in the city. Lima could be a bit dangerous, especially if you are carrying
expensive camera equipment with you in unknown neighbourhoods. 1) ___ However, we have
hired a guide who is going to give us a tour of the city sites and its museums.
From there, we are going to travel to Cuzco by bus. It’s going to be a long and tiring trip, as it
takes anywhere between 17-23 hours to get from one city to the other.
2) ___ Cuzco has a long history and is a very popular tourist destination. It used to be the
greatest city of the Inca Empire and is the oldest populated city in South America. 3) ___
Tourism is good for its economy but, on the down side of it, the structure of the city has changed
quite a bit because of this. Many of the buildings in the city are either, hotels, restaurants,
souvenir shops, travel agencies, or Internet cafés. 4) ___ The city walls built by the Incas can
still be seen today. Among the cobble stone streets and city squares, one can see how the people
of the city live their day-to-day lives. Cuzco is also where we are going to begin our trek to
Machu Picchu.
On the first day of the trek, our local guide will take us through the Sacred Valley and we will
visit the picturesque town and Inca ruins of Ollantaytambo. The next four days will be spent
walking along the ancient trail of the Incas. 5) ___ The last day will be the most exciting. We are
going to reach the steps that take us to Intipunku, the ‘Sun Gate’. From here, we will walk
through the ruins of Machu Picchu. Machu Picchu is an ancient city of the Incas tucked high
away in the mountains. 6) ___ It is the most popular archaeological site in South America. The
next day we will return to Cuzco and begin our trip back home.
1 Complete the text with these sentences.
A I’m sure it will also be a great way to see the countryside, though.
B However, I’ve read that, fortunately, much of its interesting past can still be seen and felt.
C For many years, people in the west did not know of its existence until 1911 when American
historian, Hiram Bingham, discovered it.
D Two days is enough for us because we do not want to spend too much time in the crowded
city.
E Today, it is the archaeological capital of North and South America.
F We are going to see amazing ruins and beautiful mountain scenery every day.
7 Complete the sentences using will, going to, the future perfect or the future perfect
continuous and the verbs in brackets.
1 When she graduates from medical school, she ______________ (spend) 7 years studying to be
a doctor.
2 I know! I ______________ (have) the party at my house! There is plenty of space.
3 We took our vacation early this year. We______________ (work) in the office when Jim
leaves for his days off.
4 Emanuel has been working hard in his garden. It ______________ (be) beautiful this spring.
5 I want to make this trip special for my wife. I ______________ (book) a room at a five-star
hotel.
6 By tomorrow evening, he ______________ (finish) reading the book.
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