arithmetic and geometric sequences

arithmetic and geometric sequences

9th Grade

15 Qs

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arithmetic and geometric sequences

arithmetic and geometric sequences

Assessment

Quiz

Mathematics

9th Grade

Medium

CCSS
HSF.BF.A.2, HSF.LE.A.2, 5.NF.B.7B

+1

Standards-aligned

Created by

Christina Geosits

Used 1+ times

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15 questions

Show all answers

1.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Find the eighth term:

3, 6, 12, 24, ...

Tags

CCSS.HSF.BF.A.2

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is a5 for the sequence below?

an = 5 ⋅ 2(n-1) 

a5 = 160
a5 = 40
a5 = 10
a5 = 80

Tags

CCSS.HSF.BF.A.2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which sequence is a geometric sequence with a common ratio of 2?

5, 3, 1, -1, ...

5, 7, 9, 11, ...

5, 10, 20, 40, ...

5, 15, 45, 135, ...

Tags

CCSS.HSF.BF.A.2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Find the explicit formula:

3, 6, 12, 24, ...

aₙ = 6⋅(½)ⁿ ⁻ ¹

aₙ = 6⋅(½)ⁿ

aₙ = 3⋅2ⁿ ⁻ ¹

aₙ = 3⋅2ⁿ

Tags

CCSS.HSF.LE.A.2

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which kind of sequence has a common difference?

Arithmetic
Geometric

Tags

CCSS.HSF.BF.A.2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The first three terms of an a sequence are 3, 11, and 19. Which formula represents the sequence?

an = 8 + 3(n-1)

an = 8(3)n-1

an = 3 + 8(n-1)

an = 3 + 8n

Tags

CCSS.HSF.BF.A.2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Find the next term:

81, 9, 1, 1/9, ...

1/81

1/27

1/18

18

Tags

CCSS.HSF.BF.A.2

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