1.(x^2-yx^2dy/dx+y^2+xy^2=0 2.sec^2xtanydx+sec^2ytanxdy=0 3.(y/xdy/dx=(1+x^2+y^2+x^2y^2^1/2 4.dy/dx=xe^(y-x^2,if y=0 when x=0 5.dy/dx=e^(2x-3y+4x^2e^-3y 6.(x+1dy/dx+1=2e^-y 7.(x-y^2dy/dx=a^2 8.dy/dx=cos(x+y+1

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

If np3 /nc2 = 6, find the value of n

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)?