Question
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24) \( 9 \cdot 5^{2 v}=30 \)

Ask by Delgado Coleman. in the United States
Feb 02,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

\( v = \frac{1 + \log_{5}(2) - \log_{5}(3)}{2} \)

Solution

Solve the equation \( 9 \cdot 5^{2v}=30 \). Solve the equation by following steps: - step0: Solve for \(v\): \(9\times 5^{2v}=30\) - step1: Divide both sides: \(\frac{9\times 5^{2v}}{9}=\frac{30}{9}\) - step2: Divide the numbers: \(5^{2v}=\frac{10}{3}\) - step3: Take the logarithm of both sides: \(\log_{5}{\left(5^{2v}\right)}=\log_{5}{\left(\frac{10}{3}\right)}\) - step4: Evaluate the logarithm: \(2v=\log_{5}{\left(\frac{10}{3}\right)}\) - step5: Divide both sides: \(\frac{2v}{2}=\frac{\log_{5}{\left(\frac{10}{3}\right)}}{2}\) - step6: Divide the numbers: \(v=\frac{\log_{5}{\left(\frac{10}{3}\right)}}{2}\) - step7: Simplify: \(v=\frac{1+\log_{5}{\left(2\right)}-\log_{5}{\left(3\right)}}{2}\) The solution to the equation \(9 \cdot 5^{2v} = 30\) is \(v = \frac{1 + \log_{5}(2) - \log_{5}(3)}{2}\).

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Bonus Knowledge

To solve the equation \( 9 \cdot 5^{2v} = 30 \), first, simplify it by dividing both sides by 9. This gives you \( 5^{2v} = \frac{30}{9} \). Simplifying the right side results in \( 5^{2v} = \frac{10}{3} \). Next, take the logarithm of both sides. You can use any logarithm (common or natural), but here we'll use the natural logarithm (ln): \( \ln(5^{2v}) = \ln\left(\frac{10}{3}\right) \). Using the power property of logarithms, you can rewrite the left side: \( 2v \cdot \ln(5) = \ln\left(\frac{10}{3}\right) \). Now, solve for \( v \): \( v = \frac{1}{2 \ln(5)} \cdot \ln\left(\frac{10}{3}\right) \). This gives you the value of \( v \) in terms of logarithms. If you want a numerical approximation, you can compute \( v \) using a calculator.

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