Stella swam 4/10 of a mile on saturday. she swam 2/7 of a mile more on sunday than on saturday. what fraction of a mile did she swim in the two days?

Three coins are flipped. what is the probability that there will be at least two tails?

What are the exclude value of mn+3m

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.