Which mathematical concepts were the result of the work of rené descartes? check all that apply. theory of an earth-centered universe formula for the slope of a line pythagorean theorem for a right triangle problem solving by solving simpler parts first cartesian plane for graphing trusting previous teachers for knowledge

Convert 50 kilogram to pounds. (the conversion factor from kilogram to pound is 2.2046.) a. 52.2 lb. b. 110.2 lb. c. 22.6 lb. d. 47.8 lb.

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain