Answer: 8a+8b−12
Step-by-step explanation: 8a+5b−3+3(b−3)
=8a+5b+−3+(3)(b)+(3)(−3)
=8a+5b+−3+3b+−9
=(8a)+(5b+3b)+(−3+−9)
=8a+8b+−12
The amount of matter an object has is called it's mass.
Mass does not depend on gravity, so the mass ALWAYS stays the same.
The number of permutations of the 4 different letters, taken two at a time, is given by: