Find the symmetric difference of the set of computer science majors at a school and the set of mathematics majors at this school.

Every day Louis buys five more baseball cards to add to his collection. If he already has 25 baseball cards before making any purchases, how many will he have a date 20?

Let z be a normally distributed random variable with mean 0 and standard deviation 1. what is p (z < 1.3) ?

Which on is greater 7/8 or 9/10 or6/7

For the year 2010, 33% of taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deductions on their federal income tax return. The mean amount of deductions for this population of taxpayers was $16,642.

The Hamied family stayed at a hotel for n nights. The cost was $80 per night plus a one-time fee of $20 because they brought their dog. Which expression represents the total cost of their hotel stay?

Sqrt (x) - 5.5 when x=16

A typical tip In a restaurant 15% of the total bill. If the bill is $120, what would the typical tip be?

Luke divided 16.80 by 2.5 as shown, but he forgot to put the

Kalvin tosses a coin five days in a row and gets tails everytime. Do you think there is something wrong with the coin? How can you find out?

A scuba diver dives down 30 feet into the ocean. he then swims 6 feet back up towards the surface. what is the postion of the scuba diver relative to the surface.