Hlp question: find 2a(3 - b) if a = 4 and b = 5. show all work for full credit

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.

David bought a poster for an art project. the poster is 2.7 feet wide and 3.9 feet tall. what is the area of the poster?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are: