отрезок BK-высота треугольника ABC, BE =3см, BD - медиана треугольника ABE, DE=EC=BE. найдите длину отрезка AD

Растояние между городами А и В на карте равно - 8.5 см . Найди растояние между горадами на местности,если маштаб  карты 1:1000000.РЕШИТЬ ПРОПОРЦИЕЙ

решить уравнение (x-2)(x+1)-(x-1)(x+2)+0.2=0

Объясните точно, как решать в столбик примеры на 3-х значные чиса, и на двух значные числа!

На трех-значное-

137780:116       

На 2-х значное-

27090:45

Помогите пожалуйста сделать изложение из этого текста или как можно больше сократить этот текст : This funny story happened in my early childhood. I don’t remember it very well but my Granny Vera will never forget all the details of it. I was staying at my grandmother’s in the country-side for the whole summer and felt quite comfortable with my granny there. I rode my two-wheel bike in the yard, played hide-and-seek games with my granny, took care of the white rabbit and watched granny milk the cow. But I especially liked exploring her big house. There was a dark narrow closet with lots of ancient things in it. What attracted me most was a mysterious large trunk, full of woman’s old-fashioned clothes and shoes plus nick and knacks of all sort . One day Granny Vera had to cut grass in the field for our cow and I stayed at home on my own. As soon as she left I entered the closet and started trying old dresses and shoes on. There was a dusty mirror of the wall too. Then I discovered a doll with a broken leg and a very nice necklace. A few minutes later I got into the trunk in order to look for something mysterious. As a result I discovered an old album with very nice postcards. While I was looking at them I suddenly fell asleep in the trunk. When Granny came back home and didn’t find me in the living-room she was in panic. She searched the house, the yard and the kitchen garden but couldn’t find me anywhere. Later she asked her neighbor to phone the emergency services but the young woman offered to search all the corners of the house more carefully. The women were surprised to see me sleeping peacefully. My granny was happy. Since then she has never left me on my own.