A translation
(I'm assuming that this isn't multiple choice since you didn't include the answer choices.)
The anwser is 1/3
bc together you raked 2/3
12 purple pens = 4 parts
1 part = 12/4 = 3
4 parts purple + 1 part blue = 5 parts
3 x 5 = 15
use desmos graphing calculator.
desmos. com /cal culator
The answer is D because the opposite sides are equal to each other, so you have 2 of each measurement. Also, midsegments divide each side of the bigger triangle in half. So 2 (1/2AC + 1/2AB)= the perimeter of the quadrilateral but the 2 in front will cancel out both halves, so we are left with AC+AB (OPTION D)