Property operation of 6 { 2.7 + 4 }=6{ 4 + 2.7 }

One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

For what values of x is x2 + 2x = 24 true?