What is the intermediate step in the form (x + a)² = b as a result of completing the square for the following equation? x² + 2x - 7 = 8x
The answer should be like this..
( )² =

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average

2and 3 are angles. complementary vertical congruent supplementary