The half life of a radioactive kind of camium is 14 years. How much will be left after 28 years, if you start with 72 grams of it? Is urgent, if someone knows it and have a explanation it will help, thanks :)

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

These box plots show the number of electoral votes one by democratic and republican presidential candidates for the elections from 1984 through 2012. which statement best compares the spread of the data sets

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.