Arithmetic Sequences and Series
Authored by Yostina Kostantine
Mathematics
9th - 12th Grade
CCSS covered
Used 3+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Is this sequence arithmetic?
21, 26, 31, 36, ...
Yes
No
Tags
CCSS.HSF.BF.A.2
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the common difference of this sequence?
21, 26, 31, 36, ...
21
5
3
6
Answer explanation
common difference is the number you add to 1 term to get the next term
26-21=5
31-26=5...
Tags
CCSS.HSF.BF.A.2
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the explicit formula for this sequence?
-11, -4, 3, 10, ...
a_n=-11+7n
a_n=-18+7n
a_n=10-11n
a_n=5-11n
Answer explanation
d=7, a1=-11
a_n=-11+7(n-1) ... simplify this to get the answer
Tags
CCSS.HSF.BF.A.2
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is a39 for this sequence?
21, 26, 31, 36, ...
41
216
101
211
Answer explanation
use the explicit formula a_n = 16+5n and substitute n=39
Tags
CCSS.HSF.BF.A.2
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Is this sequence arithmetic?
-35, -31, -27, -23, ...
Yes
No
Tags
CCSS.HSF.BF.A.2
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the common difference of this sequence?
-35, -31, -27, -23, ...
3
-35
-4
4
Tags
CCSS.HSF.BF.A.2
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Is this sequence arithmetic?
-11, -4, 3, 10, ...
Yes
No
Tags
CCSS.HSF.BF.A.2
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