If you toss a fair coin the probability of getting "heads" is 0.5 .John tossed the coin 28 times how many times would you expect to get heads?​

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

2x minus y equals 6, x plus y equals negative 3

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.