Ответ по предмету Математика: Найдите значение производной функции y=ln(1+x^2) в точке x= -1

Предмет: Английский язык, автор: meku19991223

70. The table ________ of wood.
A) Is make
B) Were made
C) Are made
D) Was made
E) Was maked
71. Mary (to be) at school yesterday.
a) be
b) was
c) beed
d) was
e) been
72. Bob’s parents (to be) at work last Saturday.
a) are
b) were
c) be
d) was
e) is
73. Two years ago Tom and Meg (to be) students.
a) are
b) were
c) be
d) was
e) beed
74. Last year I (to be) in Paris.
a) am
b) were
c) is
d) was
e) be
75. Your cake (to be) delicious!
a) were
b) was
c) be
d) are
e) am
76. There (to be) no apples in the fridge, there (to be) apple juice only.
a) was; was
b) were; were
c) were; was
d) was; were
e) is; are
77. Last week he (to be) in London, but his friends (to be) in Cardiff.
a) were; was
b) be; was
c) was; was
d) were; were
e) was; were
78. ..........? No, not very well.
a) Can you swim?
b) Do you can swim?
c) Can you swimming?
d) You can swim?
79. ..........? No, it's broken.
a) Does it works?
b) It works?
c) Does it work?
d) Do it works?
80. ..........? Yes, I found it.
a) Do you found it?
b) Found you it?
c) Did you find it?
d) Did you found it?
81. They .......... in this town.
a) not living
b) don't live
c) doesn't live
d) live not
82. We .......... at home last night.
a) didn't be
b) aren't
c) wasn't
d) weren't
83. They .......... have the results before next week.
a) shall not
b) won't
c) want
d) weren't
84. Must he come with us? No, he .......... come, only if he wants to.
a) doesn't have to
b) don't have to
c) hasn't to
d) mustn't
85. Where are the children? .......... are at school.
a) We
b) He
c) She
d) They

86. We need to stop cutting _____ rainforests to save the planet
A. out
B. down
C. off
D. back
87. Перевод слова "environment"
A. Окружающая среда
B. Космос
C. Загрязнение
D. Производство
88. Перевод слова "Земля"
A. Venus
B. Earth
C. Moon
D. Sky
89. What is 'rubbish' in Russian?
A. природа
B. мусор
C. грязный
D. защищать
90. Don't waste water! Turn .... the tap.
A. on
B. up
C. off
D. down
91. What kinds of energy will we use when we ....out of oil and gas?
A. run
B. get
C. go
D. make
92. Which of these is not something we can do to help the environment?
A. использовать меньше нефти и газа
B. убирать мусор
C. ездить на городском транспорте
D. покупать продукты в интернете

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Формулу поліпропілену можна записати так: H-[CH2-CH(CH3)]n-H. Визначте молярну масу поліпропілену, якщо кожна молекула містить по 150 структурних ланок.

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Можно или нельзя?

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Найдите значение производной функции y=ln(1+x^2) в точке x= -1

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