Предмет: Математика, автор: liza26590

помогите пожалуйста, у меня завтра К.р ​

Приложения:

Ответы

Автор ответа: Moonzyka
1
1. в)
2. в)
3. в)
4. в)

6. а) -24 < 150
б) -3 < -2
в) -0,79 > -0,8
г) -0,255 < -1/4

7. -3, -2, -1, 0, 1, 2, 3, 4, 5, 6
Автор ответа: 0Motsarella0
0

Ответ:

1. в)

2. в)

3. в)

4. в) - модуль не буває від'ємним

5. на картинці

6. а) -24 < 150 ; б) -3 < -2

в) -0.79 > 0.8 ; г) -0, 225 < -1/4 (-1/4= -0.25)

7. -3, -2, -1, 0, 1, 2, 3, 4, 5, 6

8. а) -х=53

х= -53

б) -х=-9

х=9

Приложения:
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Put the verbs in brackets in the Present Perfect or the Past Simple.
Phillip ____1___ (be) my best friend for over 30 years. We ____2___ (know) each other since we were children. We ____3___ (study) at the same school and _______4_______ (graduate) from the same University of Underground Engineering in our past. Recently, he and his family ___5____ (move) to a house on the same street as me. They ____6___ (live) in an old house near an abandoned mine, and now I`m very glad that they ____7___ (become) my neighbours. For the last 10 years Phillip and I ____8___ (work) for the same engineering company. We _______ ___9____ _______ (just get back) from work. We ____10___ (work) on our current project for 2 years already. So, 2 years ago our company ____11___ (start) the tunnel under the river. It ___12____ (become) the most important thing in our careers as well. Last week we ____13___ (finish) developing the central block and fully ____14___ (pass) the upper adit. During this week we ____15____ (prepare) everything for opening the calotte. So, we ____16___ just (start) to move temporary tunnel support to the upper adit level. We need to be sure that the vault is protected well against falling down. The explosion crew ____17___ (drill) the blast-holes on the low level to extend it to the side-blocks by blasting after the calotte is finished. We ____18___ already (meet) a lot of difficulties while dealing with incoherent ground here, limestone mostly on the upper part and quite solid rock on the lower one. So, we ____19___ (have) the main problem to solve by combining soft and hard rock tunneling techniques. There ___20____ (be) ground water leaks and rock slides as well, but we successfully ____21___ (cope) with this problems using appropriate techologies, adopting our equipment, knowledge and cutting techniques to such changeable ground conditions. We ___22____ also (made) the track gauge wider to make it more stable and tolerate heavier loads. We ___23____ (create) the tunnel project to be inclined not only on the ends of it leading to the daylight. We ___24____ (supposed) our tunnel to be inclined along the whole length of it because our chief engineer ___25____ always (believe) that such feature can make it safer, more stable and perform its features for a longer period.