Find all the real square roots of 0.0081

a.0.9 and -0.9
b. 0.0405 and -0.0405
c. 0.2846 and -0.2846
d. 0.09 and -0.09

Me what is the value of x? showing work would be appreciated - ! : )

Which point is a solution to y s 4x + 5?

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).