Figures x and y above show how eight identical triangular pieces of cardboard were used to form a square and a rectangle, respectively. what is the ratio of the perimeter of x to the perimeter of y? (a) 2: 3(b) 2√: 22: 2(c) 22√: 322: 3(d) 1: 1(e) 2√: 1

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?