Larry ran 220 meters farther that leigh ran. leigh ran 2.3 kilometers. how many kilometers did larry run?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Complete the steps to find 4.830 ÷ 5

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