tritium is a radioactive isotope of hydrogen that decays by about 5% per year. A large bottle of water that contained 710,000 tritium atoms remained undisturbed for 10 years. How much tritium does the bottle contain now?

9. (y^-5)^10y^10 a. y^-60 b. y^60 c. y^-150 d. y^150 find the simplified form of each expression. 10. (4/7^5)^2 a.8/14^10 b.16/49^25 c.16/49y^10 d.8/14y^25 11. determine if the number 3.43 times 10^-6 is written in scientific notation. if not, explain. a. yes; the number is written scientific notation. b. no; the first factor is not a number between 1 and 10. c. no; it is not written as a number times a power of 10

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?