5(n+6)=48
5n+30=48
5n=18
n=18/5
You would subtract the atomic number from the mass weight. <span />
I need help on that to. We have a test tomorrow and I can't figure it out and I need help:(
I'm not sure what you're asking but if you're looking for simplification, here it is. -7x² + 2x - 12
12+8+8=28
8 students are wearing a blue shirt so the probability is 8/28