AnswersPrecalculusArithmetic Series

Finite Geometric Series Answers

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Which of the following show a geometric series? Select all that apply.

A
2 + 3 + 4.5 + 6.75 + …
B
2 + 2.5 + 3 + 3.5 + …
C
6 + 7 + 9 + 12 + …
D
4 + 8 + 16 + 20 + …
E
8 + 4 + 2 + 1 + …
3

a =

Question illustration
Answers:
Blank 1:"2"
Blank 2:"8"
4

r =

Answer not available
5

a =

Question illustration
Answer not available
6

0.25 + 1 + 4 + 16 + 64

Answers:
Blank 1:4
Blank 2:0.25
Blank 3:5
7

r =

Answer:

4

8

Which shows the terms of the series?

Question illustration
A
4 + 12 + 48 + 192
B
4 + 12 + 36
C
3 + 12 + 48 + 192
D
3 + 12 + 48
9

Evaluate each series.

Question illustration
A
1,280
B
2,560
C
2,555
D
5,155
12

a1 =

Answer:

0.25

14

mc002-1.jpg

Question illustration
A
23.25
B
22.5
C
0.75
D
0.375
16

n =

Answer:

5

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