7. a flea that is 3 mm long measures 15 cm on a microscope photograph. what is the scale factor? (b - 2)

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{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Unit Conversion" ], "new_concepts": [ "Scale Factor" ], "current_concepts": [ "Unit Conversion", "Scale Factor" ] } ## Convert units to be consistent $$ \begin{aligned} &\text{Actual length} = 3\text{ mm}\ &\text{Photograph length} = 15\text{ cm} = 15 \times 10\text{ mm} = 150\text{ mm} \end{aligned} $$ ## Calculate the scale factor $$ \begin{aligned} &\text{Scale Factor} = \frac{\text{Photograph length}}{\text{Actual length}}\ &\text{Scale Factor} = \frac{150\text{ mm}}{3\text{ mm}} = 50 \end{aligned} $$ 50 { "subject": "Mathematics", "question_type": "Free Response", "knowledge_point": [ "Mathematics", "Geometry", "Scale Factor" ] }

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Convert units to be consistent

Calculate the scale factor

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