The law of conservation of energy is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.
A. 5×20
x=100
check
100/5=20
20=20
b. 15=30/2
×2. ×2
30=30.
check.
30/2=15
15=15
Hope this helps..
Answer:
all christians, but no one else
Answer:
A. Chancellor Otto von Bismarck