Do) 20. Which transformation does NOT preserve
congruence?
D.
270° rotation about the
origin
translation up 5 units
dilation by a scale factor of
O
3
On
reflection over the x-axis
G
Aday's production of 850 parts contains 50 defective parts. two parts are selected at random without r replacement. let the random variable x equal the number of defective parts in the sample. find the cumulative distribution function of x.