A letter, which is how you name it. If that is what your asking, of course.
Answer:
1. D
2. A
3. C
4. A
Step-by-step explanation:
Answer:
30 J
Step-by-step explanation:
W = mg = 3 N
h = 10 m
Potential Energy = mgh = 3*10 = 30 J
You didn't write what to do with the fraction but I think you meant to ask to simplify it:
38b/-19
Multiply - 19 from top and bottom :
-2b
He can make 12 or 9 because 9x4=36 and 12x3=36