A construction crew has just finished building a road. The crew worked for 2 4/5 days. If they built 3 2/7 kilometers of road each day, what is the total length of road they built?

How do i do this? i don’t understand

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).

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart