A = { − 5 , − 2 , 0 , 2 , 5 } I = { − 5 , − 1 , 1 , 5 , 8 } Find the union of A and I.

What are “like terms”? why can we only add like terms?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

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).