A sample of radioactive phosphorus-32 has a mass of 100 grams and has a half-life of two weeks. A half-life is the time it takes for the mass of a substance to decrease to half of its value. Which series of numbers shows the mass of phosphorus-32 remaining after 2, 4, and 8 weeks?
0.0.0
B
50.00
С
50, 25, 6,25
D
50, 25, 12.5

Mr. and mrs. wallace have decided to buy a car for $21,600. they finance $15,000 of it with a 5-year auto loan at 2.9% arp. what will be their monthly payment be? a. $268.20 b. $268.86 c. $269.54 d. $387.16 i need !

Bring the fraction a/a-4 to a denominator of 16-a^2

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.