A triangle, RST, is reflected across the y-axis to form the triangle R'S'T' in the standard (x, y) coordinate plane; thus, R reflects to R'. The coordinates of point Tare (j, k). What are the coordinates of point T'?​

step-by-step explanation:

goog be able to you with that maybe

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

the answer is 40.

proof: