Respuesta:
Explicación paso a paso:
2) [tex]\frac{AD}{AB} = \frac{AE}{AC}[/tex]
[tex]\frac{3}{3+x} = \frac{2}{7}[/tex]
3 . 7 = 2(3 + x)
21 = 6 + 2x
21-6 = 2x
15/2 = x
7.5 = x
3) [tex]\frac{3}{9} = \frac{1.5}{1.5+x}[/tex]
3(1.5 + x) = 9(1.5)
4.5 + 3x = 13.5
3x = 13.5 - 4.5
x = 9/3
x = 3
4) [tex]\frac{y}{8} = \frac{1.5}{6} = \frac{x}{10}[/tex]
toma las dos primeras razones
[tex]\frac{y}{8} = \frac{1.5}{6}[/tex]
[tex]y = \frac{8(1.5)}{6}[/tex]
y = 2
toma las dos últimas razones
[tex]\frac{1.5}{6} = \frac{x}{10}[/tex]
[tex]x = \frac{10(1.5)}{6}[/tex]
x = 2.5
