Arectangular piece of land measures 140 feet by 220 feet. a building on that land occupies an area of 40 feet by 30 feet. what is the remaining area that can be used for a park?

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

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Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables