If DC is about 12 units, what other length(s) can you determine?

One positive number is 9 more than twice another. if their product is 95, find the numbers

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Three people are traveling and need to exchange the currency of their native country for the currency of the country they are visiting. drag each exchange to the category that shows the ratio of currencies in that exchange.