22. A husband and a wife apprear in an interview for two vacancies for the same post. The probability of husband's selection is 3÷5 and that of wife's selection is 1÷5. Find the probability that: (i) both are selected
2) exactly one is selected
3) none is selected​

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?