Question

Na figura, se AB = 4, AE = 500 e BC = 300, a medida de DB é: A) 5/2 B) 3/2 C) 7/2 D) 2/3 E) 5/8​

Answer 1

B

Explicação passo-a-passo:

AD/DB=AE/CB

4-DB/DB=500/300

4-DB/DB=5/3

(4-DB)3=5DB

12-3DB=5DB

12=5DB+3DB

12=8DB

DB=12/8

DB=3/2

Qualquer dúvida só mandar aí