39. - Universityku

6 cm
E
2 cm D
А
Perhatikan gambar di samping!
Nilai x adalah ….
a. 7 cm
b. 8 cm
c. 9 cm
d. 10 cm

39.

39.

$frac{AB}{AC}=frac{AE}{AD} \ frac{x}{x + 3} = frac{6}{6 + 2} \ frac{x}{x + 3} = frac{6}{8} \ frac{x}{x + 3} = frac{3}{4} \ 4x = 3(x + 3) \ 4x = 3x + 9 \ 4x - 3x = 9 \ x = 9$