Прогресії 9клас.

Прогресії 9клас.

1st - 12th Grade

8 Qs

quiz-placeholder

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Прогресії 9клас.

Прогресії 9клас.

Assessment

Quiz

Mathematics

1st - 12th Grade

Practice Problem

Hard

Created by

Інна Антипченко

Used 25+ times

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8 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

(an) - арифметична прогресія. а4 =12, а5 =18. Знайти різницю d.

d = а5 - а4

d = 6

d = а4 - а5

d = -6

2.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

(an) - арифметична прогресія. а1 = -3, d = 2. Знайти a6.

a6 = -3 + 2 *(6 - 1)

a6 = -3 * 25

a6 = 7

a6 = 2 * (-3)5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(bn) - геометрична прогресія. b15 = 8, b16 = 32. Знайти q.

q = 32 /8 = 4

q = 8/32= 1/4

q = 32 - 8 = 24

q = -4

4.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

(bn) - геометрична прогресія.

2; b16 ; 18. Знайти b16.

√2*√18

2+18

(2+18) /2

6

5.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

(an) - арифметична прогресія. 16; a9; 24. Знайти a9.

20

24-16

(16+24)/2

√16*√24

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

(an) - арифметична прогресія. а1 = 3, a5 = 13. Знайти S5.

(3 + 13) * 5 /2

(13 - 3) * 5 /2

(2 * 3 + 13) * 5 /2

(3 + 2 * 13) * 5 /2

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

(bn) - геометрична прогресія.

b1 = 2, q = 3. Знайти b3.

2 * 32

2 + 3 * 2

2 * 33

3+22

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