Convert 65,000,000 to scientific notation. 6.5 ⋅ 106 6.5 ⋅ 107 6.5 ⋅ 10−6 6.5 ⋅ 10−7

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.

What is the slope of the equation y =

Dots sells a total of 279 t-shirts ($2) and shorts ($4). in april total sales were $670. how many t-shirts and shorts did dots sell?