Respuesta :
AB:BC = 3:2
so AB=3/2BC
AB+BC=AC=20
substitute 3/2BC+BC=20
5/2BC=20
BC=2*20/5=8
AB=3/2*8=12
Apply a:b=c:d as a/b=c/d
AB:BC = 3:2 is AB/BC=3/2
AB=3/2*BC
AC=20=AB+BC
So 20=3/2*BC+BC
1 3/2BC=20
BC=8cm
AB=20-8=12cm
AB:BC = 3:2
so AB=3/2BC
AB+BC=AC=20
substitute 3/2BC+BC=20
5/2BC=20
BC=2*20/5=8
AB=3/2*8=12
Apply a:b=c:d as a/b=c/d
AB:BC = 3:2 is AB/BC=3/2
AB=3/2*BC
AC=20=AB+BC
So 20=3/2*BC+BC
1 3/2BC=20
BC=8cm
AB=20-8=12cm
