Complete the text with in or at. Chris wakes up seven o’clock the morning. He dresses and has breakfast

Chris wakes up 1) at seven o’clock 2) in the morning. He dresses and has breakfast 3) at 7.30. He leaves home for school 4) at 8.30. He has his lessons and at around 1.30 5) in the afternoon, he has his lunch at school. He comes back home 6) in the evening. He does his homework and 7) at seven o’clock he has dinner. Then, he plays on his Playstation. He always goes to sleep 8) at about ten 9) at night.

площадь 1участка--х га

2участка--х+0,8га

всего--2,4га

х+х+0,8=2,4

2х=2,4-0,8

2х=1,6

х=0,8--площ 1участка

0,8+0,8=1,6га площ 2участка

ответ:

пошаговое объяснение:

пусть

треугольник равнобедренный, значит , две стороны имеют одинаковую длину (a=b). значит, третья сторона с= a+7

отсюда,

46= 2a+(a+7)

46= 3a+7

3a=39

a=13

сторона a=b=13 см

сторона с=13+7=20 см