Final answer:
The question 'find 11: 30.8 = lacks context and cannot be answered accurately without additional information. The provided excerpts cover various mathematical concepts that do not directly relate to the initial question.
Step-by-step explanation:
The question seems to be asking for a mathematical computation, but it is not clear what the exact question is, as there is an expression 11: 30.8 without a clear operation to perform. The phrase 'find 11: 30.8 = could imply finding a ratio, simplifying an expression, or dividing two numbers depending on context. Therefore, without additional information or clarifying context, it's unclear what precise mathematical operation or solution is being sought after in the provided question.
Additionally, the passages provided include a variety of mathematical concepts and solutions to different problems that are not directly related to the initial question about '11: 30.8'. Concepts like position-time functions, rounding rules, significant figures, and converting time are included but do not give us enough information to determine the specific operation required for '11: 30.8'.
To accurately answer your question, I would need more context or detail regarding what exactly the problem is asking for. In mathematics, precision and clarity are critical, and without the proper context or question details, providing a correct and responsible answer is not feasible.