AnswersCR - Algebra 2 26-27 - S2Evaluating Logarithmic Expressions

Evaluating Logarithmic Expressions Answers

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1
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What is the value of ?

Question illustration
A
–3
B
Negative one-third
Option B
C
One-third
Option C
D
3
2
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What is the solution of ?

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A
4
B
5
C
15
D
20
3

What is the solution of ?

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A
–18
B
–2
C
2
D
10
4

What is the value of ?

Question illustration
A
Negative three-halves
Option A
B
Negative two-thirds
Option B
C
Two-thirds
Option C
D
Three-halves
Option D
5

What is the value of ?

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A
1
B
2
C
4
D
8
6

What is the value of ?

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A
–6
B
–2
C
2
D
6
7

What is the value of ?

Question illustration
A
2
B
3
C
4
D
5
8

What is the value of log 13? Use a calculator. Round your answer to the nearest tenth.

A
0.1
B
0.3
C
1.1
D
2.6
9

A Cepheid star is a type of variable star, which means its brightness is not constant. The relationship between the brightness of a Cepheid star and its period, or length of its pulse, is given by M = –2.78(log P) – 1.35, where M is the absolute magnitude, or brightness, of the star, and P is the number of days required for the star to complete one cycle. What is the absolute magnitude of a star that has a period of 45 days? Use a calculator. Round your answer to the nearest hundredth.

A
–5.95
B
–4.60
C
3.25
D
4.60
10

Which equation is equivalent to ?

Question illustration
A
2 Superscript x Baseline = 36
Option A
B
x squared = 36
Option B
C
36 Superscript x Baseline = 2
Option C
D
x squared = 36 squared
Option D

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