Question

Tolong di jawab!!terima kasih

Answer 1

CE/EF = CA/AB
CE/2 = 9/6
CE = 3
AE = 9 - 3 = 6cm
a) CF/EF = CB/AB
6/EF = 10/8
EF = 4,8cm
b) CF/CB = EF/AB
4/7 = 6/AB
AB = 10,5cm

Answer 2

15a
EF = AB/EF = BF+FC/FC
8/EF = 10/6
10EF = 8 . 6
10EF = 48
EF = 48/10
EF = 4,8 cm
.
15b
AB = AB/EF = BF+FC/FC
AB/6 = 7/4
4AB = 7 . 6
4AB = 42
AB = 42/4
AB = 10,5 cm
.
15c
AE = AB/EF = AC/AC-EC
8/2 = 9/9-EC
8(9-EC)= 9 . 2
72-8EC= 18
-8EC = 18-72
-8EC = -54
EC = -54/-8
EC = 6,75 cm