Select the correct answer from each drop-down menu. a scientist is observing a sample of a radioactive substance. the table below shows the amount of the radioactive substance remaining, in milligrams, with respect to time, in hours, since the scientist began observing the sample. time (hours) 1 2 3 4 5 amount remaining (milligrams) 288 144 72 36 18 the independent variable in the relationship is the(time or amount remaining)and should be placed on the(x or y ). the dependent variable in the relationship is the(time or amount remaining)and should be placed on the(x or y ).

This is the 1/2 life formula. At time 0, the sample starts out 288 mg. That's the peek amount as far as he is concerned. It doesn't matter how that 288 mg got there. It only matters that that is his starting point. An hour later, he has 144 mg left. 2 hours later the number dropped to 72 and so on down.

So here are your answers

If you are curious

Formula: P = A(1/2)^(x) where x starts at 0.  

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

gmt is 4 hrs ahead of edt so just add four hours to 1: 14: 20 (minutes and seconds stay the same)

gmt is 5: 14: 20

hope this !

~just a girl in love with shawn mendes