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Answer:
see explanation
Step-by-step explanation:
This is an example of a reduction ( larger to smaller )
The scale factor is the ratio of corresponding sides, image to original.
scale factor = [tex]\frac{4}{8}[/tex] = [tex]\frac{7}{14}[/tex] = [tex]\frac{1}{2}[/tex]
? = [tex]\frac{1}{2}[/tex] × 10 = 5