Which of the following does NOT preserve congruence? A. (x, y)→(3x+1,3y-2) B. (x, y)→(y+9,-x+2) C. (x, y)→(x+5,y-1) D. (x, y)→(y-3,x-3)

if this is really you s much. i only have 3 points left and i have 2 questions to ask

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

just sum

10 + 10 = 20