What is the solution to the system of equations below? X+ 3y = 15 and 4x+2y= 30

O (6,3)

O (3,6).

O (7,-6)

O (-6, 7)

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)?

Which of the following are true? select all that apply.

X10.1.39question the population of a country has been decreasing for several decades. in 1990, the population was about 145 million people. in 2010, the population was about 138 million people. determine thepercent decrease in the country's population during this time period.elettithe country's population decreased by about% during this time period.