What are the solutions to the following system? startlayout enlarged left-brace 1st row negative 2 x squared + y = negative 5 2nd row y = negative 3 x squared + 5 endlayout (0, 2) (1, –2) (startroot 2 endroot, negative 1) and (negative startroot 2 endroot, negative 1) (startroot 5 endroot, negative 10) and (negative startroot 5 endroot, negative 10)

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