Flavia bought a pair of rollerblades. The regular price was 129.50. They were bought for 40% off and the sales tax was 15%. Show all the steps...

Evaluate the expression. (9 + 5)(3 + 2)0

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).

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie