Question

porfa ayudenme con este gracias lo necesito urgente porfa

Answer 1

Tienes que:
3/1 = (x + 4)/(2x - 1)
3(2x - 1) = x + 4
6x - 3 = x + 4
5x = 7
x = 7/5

PR = 2x - 1 = 14/5 - 5/5 = 9/5
RQ = x = 7/5

3/1 = KL/PQ
PQ = KL/3 = (4x + 1)/3 = (28/5 + 5/5)/3 = (33/5)/3 = 11/5

El perímetro de PQR es 9/5 + 7/5 + 11/5 = 27/5

Saludos!