The total angle sum of a triangle is 180°
As such, 180= 78 + 2s +4s
102= 6s
s=17
Answer:
4/9
Step-by-step explanation:
You're welcome i worked it out on a piece of paper
List of prime numbers: 2,3,5,7,11
Both C and D equal 2 which is a prime number.
The answers are C and D
