Answer:
72 marbles are yellow
Step-by-step explanation:
Answer:
x = 34
Step-by-step explanation:
ΔABD and ΔBCD are both isosceles triangles
In ΔABD
AB =AD, hence ∠ABD = ∠ADB ( base angles are equal )
∠ABD =
=
= 68°
∠DBC = 180° - 68° = 112° ( straight angle )
∠BCD = x =
=
= 34
Answer:
is c
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
9+3=12