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erica [24]
2 years ago
8

Circle E with center at (−5, 3) and radius of 8 is similar to circle F with center at (1, 2) and radius of 4. An incorrect infor

mal argument for proving the two circles are similar is shown.
Step 1 Translate circle E to the right 6 units and down 1 unit to form concentric circles.
Step 2 Dilate circle E to be congruent to circle F using scale factor of k equals r sub two over r sub one equals 8 over 4 equals 2 period
Step 3 When an object is dilated, the dilated object is similar to the pre-image, thus the two circles are similar.

Which step is incorrect, and how can it be fixed?

Group of answer choices

Step 1, circle E should have been translated right 1 unit and down 6 units

Step 2, circle E should have been dilated using scale factor of k equals r sub two over r sub one equals 4 over 8 equals one half

Step 3, replace "dilated" with "translated"

All steps are correct
Mathematics
1 answer:
aalyn [17]2 years ago
6 0

Answer: Step 2

Step-by-step explanation:

The scale factor is defined as image/preimage, so since the image is circle F and the preimage is circle E, k should be equal to (radius of F)/(radius of E), or 1/2, not 2.

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