The Barrel in Problems 4 is 5 feet long and the radius of its base is 1.5 feet. ​

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation