The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to hatalmas Starting with 160 grams of a radioactive isotope, how much will be left after 5 half-lives?
Use the calculator provided and round your answer to the nearest gram

The circumference of a circle is 5 pi cm. what is the area of the circle?

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0