Pl hel What is an equation of the line that passes through the point (4,2) and is perpendicular to the line 4x+3y=21

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Find the area of a parallelogram with base 15 yards and height 21 2/3

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).