50% of a certain number is 12. what is the number?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

The police chief wants to know if the city’s african americans feel that the police are doing a good job. identify the management problem (i.e dependent variable) and identify the independent variable.

Find the amount of simple interest earned for depositing the given principle in an account if $2200 is invested at 5.5 % for 6 months