Yesterday 20 employees in an office were absent. if these absentees constitutes 25% of the employees how many employees are there?

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.