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Mathematics

9th Grade

Exploring Arithmetic Series Concepts
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20 questions

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1.

FILL IN THE BLANKS QUESTION

15 mins • 1 pt

Media Image

What is the common difference?

(a)  

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

¿Cuál de las siguientes secuencias es una serie aritmética?

2,4,8,16,32,…2, 4, 8, 16, 32, \ldots

3,6,9,12,15,…3, 6, 9, 12, 15, \ldots

1,4,9,16,25,…1, 4, 9, 16, 25, \ldots

5,10,20,40,80,…5, 10, 20, 40, 80, \ldots

3.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

Find the common difference of the arithmetic series: 7,10,13,16,…7, 10, 13, 16, \ldots

(a)  

4.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

Calculate the 10th term of the arithmetic series: 5,8,11,14,…5, 8, 11, 14, \ldots

(a)  

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

¿Cuál es la fórmula para el término n de una serie aritmética con el primer término a1a_1 y diferencia común dd ?

an=a1+d(n−1)a_n=a_1+d(n-1)

an=a1⋅dna_n = a_1 \cdot d^n

an=a1+nda_n = a_1 + nd

an=a1−d(n−1)a_n=a_1-d(n-1)

6.

MULTIPLE SELECT QUESTION

15 mins • 1 pt

¿Qué series son aritméticas? (selecciona TODAS las que correspondan)

2 + 4 + 8 + 16...

7 + 15 + 23 + 31...

80 + 68 + 56 + 44...

1 + 3 + 7 + 11...

-10 + (-8) + (-6) + (-4)...

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

¿Cuál secuencia NO es una secuencia aritmética?

-7, -13, -19, -25,...

-10, -6, -2, 2,..

6, 8, 10, 12,...

3, 15, 75, 375,...

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