Fill in the gaps with the article the when necessary. a) "is there sugar in tea? " he said. b) coffee she made was tasteless. c) there was butter in the cake. d) there was no meat or fish in soup. e) i drink coffee without milk. f) juice i was drinking was very cold.

A)      "is there sugar in the tea? " he said.b)      the coffee she made was tasteless.c)      there was butter in the cake.d)      there was no meat or fish in soup.e)      i drink coffee without milk.  f)      the juice i was drinking was very cold.

A) - - b)the c)- d)- - the e)- - f) the

Hi, my name is [имя ] and today i want to tell you about my hobby. my favourite kind of sport - is swimming, and it is my hobby. i like water and all that associate with it. when i am swimming, i feel myself like fish feels itself in the water. my friends told me that i can be a great swimmer, and they compare me with a son of neptune. as for me, it is funny, because i only do, what i want and what i like . i started going to the swimming pool [2,3,4..] years ago ,thanks to my mother, who likes watching sport channels. once when i watched with her one swimming competition, i decided, that this kind of sport is my destination. as for me, there is no matter, how do you do your favourite hobby, it's important, how do you love it.

ответ:

объяснение:

нужно построить, как на рисунке.там , основное здесь.

итак, построим высоты, тогда авн=100-90=10, угол ван=180-90-10=80.

аналогично с треугольником смд: угол мсд=170-90=80, угол сдм=180-90-80=10 градусов.

отсюда треугольники ван и дсм подобны по двум углам

также всмн - прямоугольник (по определению), вс=нм, вн=см (высоты).

из подобия ав/сд=ан/см=4корней5/8корней5=1/2

ан/см=1/2 см=вн (высоты), значит ан/вн=1/2 отсюда 2ан=вн

ав^2=ан^2+bh^2. ab^2=(2ah)^2+ah^2

5ah^2=(4корней5)^2

5ah^2=16*5 => ah^2=16, ah=4

bh=2*ah=2*4=8 - это высота, также равна см

точно также поступаем с треугольником смд. там вн/дм=1/2, дм=2вн=2см

тогда дм=2*8=16

по построению ад=ан+нм+мд, а нм=вс (нмсв прямоугольник по построению), значит ад-вс=ан+нм+мд-нм=ан+мд=4+16=20