Radium 226, which had been used for cancer treatment, decays with half-life of 1622 years. suppose there is 2.3gram sample of raduim 226. how long will it take to have 1.7 grams remaining?

Find the values of y: 3y^3(y^2+ 2/3y)=0

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list