susan invested $2,000. part of it a 6% and the rest at 9%. if the annual income was $138, how much did she invest at each rate?

the football players are volunteering for the test.

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it is rigid.; it is isometric. ; the size is preserved.

step-by-step explanation:

a translation is called an isometry; these are transformations that preserve congruence between pre-images and images.

they are also called rigid transformations, as the only thing that can happen to a pre-image is that it is moved or turned, not stretched or shrunk.

since congruence is preserved, the size is preserved.