The areas of a rectangle is 54 x^9 y^8 square yards. if the length of the rectangle is 6 x^3 y^4 yards, which expression represents the width of the rectangle in yards

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