Question

punctele A B C sint coliniare in aceasta ordine. Aflati lungimea segmentului

AC daca AB=9cm Bc=1,5dm
AC daca AB=2BC=10,8cm


plizz ajutor o sa va ramin dator

Answer 1

ab=9 bc=1,5dm=150cm
ac=ab+bc=9+150=159cm=15,9dm
ab=2bc=10,8
ab=10,8
bc=10,8:2=5,4
ac=ab+bc=10,8+5,4=16,2