Answer:
d)AB = 12
Step-by-step explanation:
ΔADB ≅ ΔADC
⇒ AB ≅ AC {Corresponding parts of congruent triangles}
10x - 8 = 3x +6
Add 8 to both sides
10x = 3x + 6 + 8
10x = 3x + 14
Subtract 3x from both sides
10x - 3x = 14
7x = 14
Divide both sides by 7
x = 14/7
x = 2
AB = 10x - 8
= 10*2 - 8
= 20 - 8
AB= 12
