Acircle is defined by the equation given below.

what are the coordinates for the center of the circle and the length of the radius?

a.

b.

c.

d.

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?

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?