How much of a radioactive kind of calcium will be left after 15 days if you start with 96 grams and the half-life is 5 days

step-by-step explanation:

step-by-step explanation: yes

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

ans789

step-by-step explanation: