Select all that apply. polygons must have which of the following characteristics to be considered similar? a 1: 1 correspondence in vertices corresponding angles are equal. both polygons are the same shape corresponding sides are proportional. both polygons are the same size.

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

What are the coordinates of the image of p for a dilation with center (0, 0) and scale factor 2