Choose the correct equation type for each system. (equivalent, inconsistent, consistent)

{(y=3x--y+4): }

{((1)/(2)y=-x+=-4x+20): }

{(y=-x+=-y-6): }

{(y=4x+=6x-10): }

{(y=2x+=-2x+3): }

{(-2x+5y==(2)/(5)x): }

Use sigma notation to represent the following series for 9 terms.

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano

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