1 вариант

1 вариант

9th Grade

20 Qs

quiz-placeholder

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1 вариант

1 вариант

Assessment

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9th Grade

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Дана формула последовательности an=-3n+2

a1=-1, d=5

a1=-1, d=-3

прогрессии нет

a1=-1, q=-3

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

an=(-1)n•n+1. Напишите члены прогрессии a1, a2, a3,a4 в порядке возрастания

a1, a2, a3,a4

a3, a1, a2, a4

a2, a3, a1, a4

a3, a1, a4, a2

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Если a1=7, d=4, найдите 5 первых членов арифметической прогрессии

7;11;18;25;32

7;14;21;28;35

7;10;14;18;22

7;11;15;19;23

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

a5=45, d=8. Найдите 8 член прогрессии

53

56

69

71

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Четвертый член геометрической прогрессии равен 12. Найдите произведение b3 и b5.

144

120

64

136

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

Если tg=5, найдите значение выражения

7/13

7/15

-7/13

-7/15

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Из приехавших в город туристов 33 говорят на английском, 25 на французском, из них 11 говорят на двух языках, а 5 на немецком. Сколько всего туристов приехало в город?

85

52

63

91

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