Respuesta :

esspdowntown

Answer:

x = 7

Step-by-step explanation:

Because in rectangle diagonals are equal therefore 3x +4 = 25

which implies 3x = 25 - 4

x = 7

please mark me brainliest and 5 star
x = 7... the two lengths are congruent and therefore you set them equal to eachother and solve for x