Which statement is true
A. (X, y) (x-7,y+2) represents a translation 7 units down and 2 units to the right
B. (X, y) (-x,-y) represents a rotation 180° clockwise
C. (X, y) (x+3.5,y+3.5) represents a dilation wuth a scale factor of 3.5
D. (X, y) (-x, y) represents a reflection over the x axis

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).

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle