Astudents cost for last semester at her college was 2500. she spent 500 of that on books. what percent of last semesters college cost was spent on books?

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).

The graph shows the distance kerri drives on a trip. what is kerri's speed?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)