Answer:
cos(m∠B) = 2√5/5
Step-by-step explanation:
Easiest way is to guess and check on this problem. When you take the cos(m∠B), you would get 6/3√5, rationalized to 2√5/5. That would be the correct answer.
Step-by-step explanation:
5p=12h
3p=?(h)
12×3=5h
36=5h
h=36/5
h=7.2 hours
That is true because you are still dividing x by three either way