Answer:
27 N
Step-by-step explanation:
Since force varies directly with acceleration, we can introduce a constant, k, and write 
When force is 15, acceleration is 5, so plug it into the equation and solve for k:

Now, to find force, we use a = 9 and k = 3, so

The force is 27 N
Answer:
7/12
Step-by-step explanation:
you have to find a common denominator, which would be 12. it would be 4/12 + 3/12. add them up, and you get 7/12
Answer:
hey how r u please tell me
Answer:
I think it is associative! Not sure though bc of the q!
Step-by-step explanation: