Ihave 3 countries (germany, usa, china) with 3 statistics (people per square km, internet users per 100 people, cell phone owners per 100 people). what i don't get: use mathematical strategies i. e. ratios to compare countries. how do i do that. !

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

Deshawn uses 3/4 of a box of rice to cook dinner the portion he uses weighs 12 ounces right and solve an equation to find the weight of the full box of rice

How can you construct perpendicular lines and prove theorems about perpendicular lines