Mandy's brother zach is 15 years younger than her. the sum of their ages is 49. find both ages

The volume of a cube-shaped shipping container is 13,824 cubic inches. find the edge length of the shipping container.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g