Find the interior angle sum for each polygon. Round your answer to the nearest tenth if necessary. PLEASE HELP ME!

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).