Simplify the expression cos x cot x + sin x?

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

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).

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2