If one tosses a coin three times, write dow nthe possible observed number of heads and their probabilities

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

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.

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42