Askydiver falls 144 feet in 3 seconds. how far does the skydiver fall per second?

Me answer number 3plz explain how you do it

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).

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab