Apassword is 4 characters long and must consist of 3 letters and 1 of 10 special characters. if letters can be repeated and the special character is at the end of the password, how many possibilities are there?
a. 175,760
b. 456,976
c. 703,040
d. 1,679,616

To prove "p is equal to q" using an indirect proof, what would your starting assumption be?

Which equation represents a circle with a center at (–3, –5) and a radius of 6 units? (x – 3)2 + (y – 5)2 = 6 (x – 3)2 + (y – 5)2 = 36 (x + 3)2 + (y + 5)2 = 6 (x + 3)2 + (y + 5)2 = 36

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?