Is the given statment true or false? In(e3/f)= 3 In(e) - In(f)

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

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

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?