This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

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Answer
c=0.7781
here's the solution for question 1b:
Step 1: Simplify the left side of the equation. The given equation is . First, simplify the multiplication on the left side:
Step 2: Set the simplified value equal to the right side of the equation. Now the equation becomes:
Step 3: Solve for using logarithms. To find the value of , take the common logarithm (base 10) of both sides of the equation: Using the logarithm property : We can calculate using the values from the previous problem, where and : Therefore, .
The final answer is .
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here's the solution for question 1b: Step 1: Simplify the left side of the equation.
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.