Paul was so excited about his home run that he threw his hat really high when he crossed home plate. His projectile motion can be modeled by:h=−16t2+18t. Round your answers to two decimal places. a. How high was Paul's hat after 0.8 seconds?

b. How long did it take for Paul's hat to hit the ground?

c. What was the maximum height of Paul's hat?

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

Two researchers are attempting to create a new psychotherapy protocol that more reduces panic attacks. they believe that they have succeeded and are now in the clinical trial period of their protocol's development. they are working with several cohort groups, some of which have been through the new protocol, while others have done the standard protocol currently recommended. if these researchers are interested in evaluating the difference in the percentage of test subjects who successfully decreased their panic attacks in 2 months on the new protocol versus the percentage of test subjects who successfully decreased their panic attacks in 2 months with the traditional protocol, which of the following statistical tests would be most appropriate? a. analysis of variance (anova) b. correlation c. chi-square test d. paired t-test e. independent t-test

Which of these figures must be a rectangle?