What is the measure of ∠r ?

enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.
m∠r= °

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625

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