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Let log,4 = 3; log,C' = 2; log₂D = 5log (C²),10% ?What is the value ofA. -11OB. There isn't enough information to answer the question.C. 2D. -15,378

Let log,4 = 3; log,C' = 2; log₂D = 5log (C²),10% ?What is the value ofA. -11OB. There-example-1
User Mossaab
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1 Answer

3 votes

Explanation

We are given the following:


\begin{gathered} \log_bA=3 \\ \operatorname{\log}_bC=2 \\ \operatorname{\log}_bD=5 \end{gathered}

We are required to determine the value of:


\operatorname{\log}_b((A^5C^2)/(D^6))

3We know that the multiplication and division laws of logarithm state:

Therefore, we have:


\begin{gathered} \log_b((A^5C^2)/(D^6))=\log_b(A^5C^2)-\log_bD^6 \\ =\log_bA^5+\log_bC^2-\log_bD^6 \end{gathered}

We also know that the power law of logarithm states:

Therefore, we have:


\begin{gathered} \Rightarrow\log_bA^5+\log_bC^2-\log_bD^6 \\ =5\log_bA+2\log_bC-6\log_bD \\ Substituting\text{ }their\text{ }values \\ =5(3)+2(2)-6(5) \\ =15+4-30 \\ =-11 \end{gathered}

Hence, the answer is -11.

Let log,4 = 3; log,C' = 2; log₂D = 5log (C²),10% ?What is the value ofA. -11OB. There-example-1
Let log,4 = 3; log,C' = 2; log₂D = 5log (C²),10% ?What is the value ofA. -11OB. There-example-2
User Prateek Gangwal
by
7.8k points