Trapezoid abcd is congruent to trapezoid . which sequence of transformations could have been used to transform trapezoid abcd to produce trapezoid ? choose exactly two answers that are correct. a. trapezoid abcd was rotated 90° clockwise around the origin and then reflected across the x-axis. b. trapezoid abcd was reflected across the x-axis and then rotated 90° counterclockwise around the origin. c. trapezoid abcd was rotated 90° counterclockwise around the origin and then reflected across the x-axis. d. trapezoid abcd was reflected across the y-axis and then rotated 90° counterclockwise around the origin

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years