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Anastasia7711
Anastasia7711
06.05.2020 12:10 •  Геометрия

Tasks for Summative Assessment for term 2 Listening Task 1. Listen to different people talking about their job. Choose the best answer for each question.
1. Does speaker A enjoy his job?
a) Yes, he does. b) He sometimes enjoys. c) No, he doesn`t.
2. When does speaker B work?
a) He works on weekdays. b) He works on weekends and holidays. c) He works on summer holidays.
3. What does speaker B say tourists love doing?
a) They love visiting universities. b) They love taking a boat trip. c) They love swimming in the river.
4. Does speaker C like his job?
a) Yes, he does. b) He sometimes likes his job. c) No, he doesn`t.
5. What does speaker E not like about her job?
a) He doesn`t work because of the doctors. b) He doesn`t work because of the sick people. c) He doesn`t work because of the uniform.
Reading Task 2
Read the following essay by Lucy Stone, who wrote about her grandfather for the School magazine. Then decide whether each statement 1–5 is true or false.
Write T (True) or F(False) in front of each statement.
This is my Grandfather My name is Lucy and this is my beloved grandfather. His name is Tim and he is my best friend. My grandfather is sixty-four years old and he is retired now, so he has a lot of time to be and play with me. I love him very much and I know he loves me too. We usually spend a lot of time together. We live in a big house in Fort Collins, Colorado. My grandfather is a patient and caring man and sometimes I think he is a magician. He is always guessing what I want to do or eat, or what I feel inside! When I am sad, he always makes me laugh with his funny face. He puts me on his shoulders; he tells me many funny stories, and even sing songs. Every day my grandfather prepares my breakfast, he drives me to school and picks me up at the end of classes, he helps me with my schoolwork, he plays chess with me and he counts stars with me. You know, my grandfather is the only grown-up I know who truly understands me. I love him very much!

1. Lucy’s grandfather is always busy.
2. He is retired now.
3. Lucy’s grandfather is very caring man.
4. He prepares breakfast twice a week.
5. Lucy thinks that her grandfather doesn’t understand her.

Grammar Task 3.
Complete the sentences with the verbs in the correct sentences:
entertain/score/throw/check/go/double
1. Every time their team , the fans start celebrating.
2. Mascots sweets to the fans to entertain them.
3. Waterslide testers waterslides.
4. Alikhan often on holiday to Turkey.
5. They In TV commercials and film
СОЧ ​

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Ответ:
kolitka1
kolitka1
06.05.2020
1. 1) 50: 2 = 25 (- полусумма сторон) 2) пусть х + 5 - большая сторона, тогда х - наименьшая. полусумма равна 25, имеем уравнение: х+х+5=25, отсюда х = 10. 3) итак, наименьшие стороны равны по 10  см, а наибольшие по 15  см.2.30 градусов, в ромбе все стороны равны, и если сторона равна диагонали, то образуется равносторонний треугольник у которого все внутренние углы равны 60 градусов, вторая диагональ есть биссектриса внутреннего угла - делит его пополам3. 0,5*ac=корень (ad в квадрате + (0,5*bd) в квадрате) ac = 2*корень (6 в квадрате + 2,5 в квадрате) = 2*6,5 = 13
4,5(17 оценок)
Ответ:
dima1028
dima1028
06.05.2020
Сейчас : ) площадь полной поверхности (sполн)  равна 36. решение: sполн = 4sграни + 2sоснования. грани в прямой призме с основанием в виде ромба равны. sграни=h*a=3а, где а - сторона ромба. sоснования=2*sтреугольника. sтреугольника=(а*h)/2, так как треугольник с углом 60 град - равносторонний. далее  sоснования=2*(a*h)/2=a*h=3а=sграни;   sполн = 4sграни + 2sграни = 6sграни = 6*3*а= 18*а. теперь осталось найти а. рассмотрим равносторонний треугольник (половина основания призмы).найдём высоту: h=(2√3)/2;   теперь рассмотрим прямоугольный треугольник  (половина основания призмы) и найдём а.  cos(60град/2)=((2√3)/2)/а, отсюда  √3/2=√3/а, а=2. подставляем в формулу  sполн = 18*2 =36
4,4(46 оценок)
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