For a button to fit through its buttonhole, the hole needs to be the size of the button diameter. what size buttonhole is needed for a button with a circumference of 7.3 centimeters? use the value of 3. 14 to represent pi

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|

Pls never taught i’m really confused and i rlly need

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z