The measurement of radioactive decay can be useful tool in things such as carbon-dating. for a carbon sample with mass 500kg and a half life of 5,730 years, calculate the remaining mass after 20,000years.

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries