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02-06-2022
Mathematics

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Circle A is dilated by a scale factor of 1.5 to form circle B. If the diameter of circle B is 9, what is the diameter of circle A?

Group of answer choices

6

7.5

10.5

13.5

Respuesta :

Medunno13 Medunno13

08-06-2022

Answer: 6

Step-by-step explanation:

In this situation, the image is circle B and the preimage is circle A. Since the scale factor is defined as image/preimage, we know that the diameter of circle A must be 9/1.5 = 6

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