Must the difference between two rational numbers be a rational number? explain.

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.