Paulo's economics course requires two papers-−minusone long and one short-−minusthroughout the semester. the number of pages, lll, in the long paper is 111 more than 222 times the number of pages, sss, in the short paper. if the total number of pages for both papers is 404040, how many pages must be in the long paper?

One common educational practice is to chart students' progress over time so that students can see their own improvement. these progress charts often lead to higher student achievement in the absence of other observable forms of reinforcement. the effectiveness of such charts in changing behavior illustrates the role of reinforcement as:

The document shows a personal allowances worksheet. this document is part of a

The history of ethical regulations in human subjects research began with the: a. declaration of helsinkib. nuremburg codec. common ruled. belmont report