12. Error Analysis A classmate states that BC is tangent to A. Explain how to show that your classmate is wrong.
А
67
B
28°

Place the following steps in order to complete the square and solve the quadratic equation,

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

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