Answer:
D. 32
Step-by-step explanation:
SQ = ST means the triangles SRQ and SRT are congruent, so RQ = RT.
2x +1 = 3x -1
2 = x . . . . . . . add 1-2x
Then ST = 5(2)+1 = 11, TR = 3(2)-1 = 5 and the two remaining line segments of the perimeter are the same lengths as these. The perimeter is ...
P = 2(11 +5) = 32 . . . . units
The perimeter of ΔQST is 32 units.
