The half-life of sodium-22 is 2.6 years. a sample contains 800 mg of this isotope.

which expression represents the mass of sodium remaining after h half-lives?

s = 0.5(800)h

s = 800(0.5)h

s = 8000.5h

s = 800h + 0.5
which expression relates h, the number of half-lives, and y, the number of years?

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

Let event a = you roll an even number on the first cube.let event b = you roll a 6 on the second cube.are the events independent or dependent? why?

Match the vocabulary to the proper definition. in probability, two events in which 1. conditional probability the outcome of one event is independent of the outcome of a second event. 2. dependent events in probability, two events in which the outcome of one event is dependent on the outcome of a second event. the probability of an event in which the outcome of the event is conditional on the outcome of one or more different events. 3. independent events