Jill is in math club. there are 20 students in the club. the sponsor will pick two students at random to run the meeting. what is the probability that jill will not be picked? give answer as a decimal. ( show your work so i know how you got it! in advance! )

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters