Geometric Series Answers
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1
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Identify a1 and r for the sum of the geometric series. −4, 8, −16, 32,… a1 = r =
Answers:
Blank 1:Insufficient information
Blank 2:Insufficient information
2
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r = [___]
Answer:
Insufficient information
3
S6 = [___]
Answer:
84
4
Find the sum.
A
Option
B
Option
C
Option
5
a1 = [___]
Answer:
1/2
6
Find the sum.
A
OptionB
OptionC
Option7
a1 = [___]d
Answer:
0.5
8
Write as a fraction in lowest terms:a = ⇒ 14
Answers:
Write as a fraction in lowest terms:a =:14
b =:111
10
Which series represents this situation?
A
1 + 1 · 7 + 1 · 72 + . . . 1 · 76B
1 + 1 · 7 + 1 · 72 + . . . 1 · 77C
7 + 1 · 7 + 1 · 72 + . . . 1 · 76D
7 + 1 · 7 + 1 · 72 + . . . 1 · 7711
After 7 days, people saw the video.
Answer:
960800
12
Check all of the infinite geometric series that converge.
A
135 – 405 + 1,215 – 3,645 + . . .B
Option
C
Option
D
Option
14
Which geometric series should you use to find the total amount of money after 30 days?
A
Option
B
Option
C
Option
15
Question text not available
Answers:
Blank 1:79
Blank 2:99
16
Question text not available
Answers:
Blank 1:14
Blank 2:111
17
Check all items included in your explanation.
A
The formula for the sum is.B
A fraction raised to a large power approaches zero.C
The sum is a1 divided by the difference of 1 and r.18
Identify a1, r, and n for the sum of the geometric series. 1 2 + 3 8 + 9 32 + 27 128 + 81 512 a1 = r = n =
Answers:
Blank 1:Cannot be determined from the provided information
Blank 2:Cannot be determined from the provided information
Blank 3:Cannot be determined from the provided information
19
⇒ 1/2
Answer:
1
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