За 15 !

вы­со­та, про­ве­дён­ная к ги­по­те­ну­зе, равна

произведению про­ек­ций ка­те­тов на ги­по­те­ну­зу
сред­не­му гео­мет­ри­че­ско­му про­ек­ций ка­те­тов на ги­по­те­ну­зу
сред­не­му ариф­мет­ри­че­ско­му про­ек­ций ка­те­тов на ги­по­те­ну­зу

найдите длину перпендикуляра kh, опущенного с некоторой точка k окружности на диаметр ab, если ah=3 см, bh=12 см.

окружность, вписанная в трапецию, точкой касания делит ее боковую сторону на отрезки 4 см и 9 см. найти радиус окружности.

в треугольнике abc с ∠a=90∘ и ac=4 см провели отрезок mk⊥ab , который делит сторону ab на отрезки 3 см и 5 см. найти mk .

6.5 см
2.5 см
5 см
3 см

At 1) ...the...weekend, Roy’s parents took him to 2) the funfair. They parked their car in 3) a big field and then went off to have some fun. Roy bought 4) a hot dog and 5) a doughnut from 6) the stall at 7) the entrance to 8) the funfair.

Roy went on lots of 9) - rides, but his favourite was 10) a roller-coaster. It was very scary! They talked to fortune-tellers and they went into rooms full of strange mirrors. They stayed until Roy was exhausted.

hat night, Roy dreamed about 11) a wonderful time he’d had at 12) the funfair that day.

Объяснение:

stolik.

On August 20, I was returning via Moscow to Kazan from Tomsk, where I flew to a meeting of the Arbitration Court on the bankruptcy procedure of an individual. I noticed Alexei Navalny, when he was standing in line for control in front of the departure zone, I thought: "He or not he." Among young people, he is a recognizable personality - my mother probably does not know him, and his 10-year-old nephew, to whom I later sent a photograph, recognized him.

The first time passing by him, I decided that it seemed to me. I went back, looked again and realized that he was definitely. There were two lines, we went through pre-flight control at the same time, and I saw that they immediately