Answer:
Step-by-step explanation:
-7x²=-448
x²=64
x=±8
Your answer would be D because in order to find the momentum you have to multiply your weight and how fast your going and that would give you an answer of D (50)5=500 Kg m/s
Number 17 is Infinity. I'm still working on the rest
So you are trying to multiply 6 times 3 so how can you multiply is how we know that 6×3 Is 18 so what you have to do is multiply