A contractor is calculating the interior perimeter of square windows on a building site. Each window will be framed with 2 inches of wood within a concrete frame. The length or width of each window can be shown by the expression x − 2. The contractor writes this expression to find the interior perimeter of a window: (x − 2) + (x − 2) + (x − 2) + (x − 2). What equivalent expression can you use to find the same measurement?

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?