The difference between John and Jane's college tutition was
$1,130.75. If Jane's tuition was
$45,000.00, what are the two
possible costs for John's tuition?

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?

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.