Jackie used to be on the phone 2 1 3 times as much as her brother. her parents threatened to take away the phone, so she cut down to 5 2 of the time she used to be on the phone. how many times as much as her brother is jackie now on the phone?

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

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)?