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Пошаговое объяснение:
1. а) приводим к общему знаменателю, считаем и получаем: 9/30 - 4/30 = 5/30 = 6
б) 3,25*50,6= 164,45
2. Составим пропорцию:
6 раб - 15 д
10 раб - х д
х = 15*10/6=150/6=30 дней
3. 3/8 ÷ 7/12 = 3/8 × 12/7 = 36/28 = 9/7
22/7 × 3/11 (22/7 - неправильная дробь из твоей исходной)
22 и 11 сокращаем: 6/7 в итоге остаётся
9/7 - 6/7 = 3/7
4. 0.3а - 7, если а = -5:
0.3 × (-5) = -0.15
-0.15 - 7 = -7.15
5. Всего - х
В 1 д - 52 кг
В 2 д - <1.3 раза
Всего продано - 1/3 от х
Во 2 день продали: 52÷13/10 = 520/13 = 40 кг
Всего продано за 2 дня - 92 кг
Привезли: 92×3 = 276 кг
6. ответ будет 2
Обнимаем так:
-2,76+2,76=0
6,8-4,8 = 2
2+0 = 2
I spend my summer holidays at my granny’s. There are many things there to do. What I did most of the time - I swam in the sea and sunbathed. Sometimes I made a fire with my friends at the seaside and cooked potatoes there. It was wonderful. We told anecdotes to each other, and did everything we wanted. I also got used to walk alone in the forest.
When August was coming to its end, I went on a small voyage by ship. The ship name was “Sevastopol”.
But this summer wasn’t for me only sugar and honey. I have passed through the graduating exams after school and entering exams in the university. So the bigger part of my summer vacations I spent sitting with the books. Of course, it was not interesting, but I’m glad that I did it because now I’m a student of the best university in our country.
