Solve for X and y
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Write two subtraction equations that are equivalent to 5 + 12 = 17.

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

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