Answer
$0.434$
Work Step by Step
By using a calculator to evaluate the expression and rounding-off the answer to $3$ decimal places, we obtain:
$\dfrac{\log{15}+\log{20}}{\ln{15}+\ln{20}} \approx \boxed{0.434}$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 4 - Exponential and Logarithmic Functions - Section 4.4 Logarithmic Functions - 4.4 Assess Your Understanding - Page 321: 54
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