four people are in, Fred, Jenny, and Helen enter the names into a drawing. The winner received either gift card or a sandwich, and the prize is selected at random. What is the probability that either genuine and is given a gift card or Fred wins and is given another prize? Draw a table or tree diagram to help me figure it out

Janets dinner costs 7.50. if she wants to leave a 10% tip how mich extra should she leave

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.