Answer:
Step-by-step explanation:
A straight line adds up to 180 degrees, therefore 3x+6x = 180
9x = 180
x = 20
4^2+3^2=25
sqrt 25= 5
Answer is 5
Answer: B
Step-by-step explanation:
I used heron's formula.
Answer:
20,160
Step-by-step explanation:
I think the answer is 17%
