Questions

TRUE / FALSE

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9 questions · timed · auto-graded

Question 11 Mark
If $\frac{\log 49}{\log 7}=\log y$, then $y=100$
Answer
True. 
$ \frac{\log 49}{\log 7}=\log y $
$ \Rightarrow \frac{\log 7^2}{\log 7}=\log y $
$ \Rightarrow \frac{2 \log 7}{\log 7}=\log y $
$ \Rightarrow 2(1)=\log y $
$ \Rightarrow 2 \log _{10} 10=\log _y $
$ \Rightarrow \log _{10} 10^2=\log _{10} y $
$ \Rightarrow \log _{10} 100=\log _{10} y $
$\Rightarrow y=100 .$
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Question 51 Mark
If $\log _2 8=3$, then $\log _8 2=\frac{1}{3}$
Answer
If $\log _2 8=3$, then $\log _8 2=\frac{1}{3}$
The statement is $\text{TRUE}.$
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Question 61 Mark
State true or false in the following$:\ $ If $x^y = z,$ then $y = log_xz$
Answer
If $x^y = z$, then $y = log_xz$
The statement is $\text{TRUE}.$
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Question 71 Mark
State true or false in the following$:\ $ If $4^3 = 64$, then $\log _3 64 = 4$
Answer
If $4^3 = 64$, then $\log _3 64 = 4$
The statement is $\text{FALSE}.$
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Question 81 Mark
State true or false in the following$:\ $If $\log _{10} p = q$, then $10^p = q$
Answer
If $\log _{10} p = q$, then $10^p = q$
This statement is $\text{FALSE}.$
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Question 91 Mark
State true or false in the following$:\ $If $\log _{10} 100 = 2$, then $10^2 = 100$
Answer
If $\log _{10} 100 = 2$, then $10^2 = 100$
The statement is $\text{TRUE}.$
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