A construction company is considering Submitting bids for two contracts it will cost the company 10,000 dollars to prepare and submit the bids and if won each bid would provide 50,000 of income to the company . The company estimates that it has a 10% chance of wining any given bid . Here is the probability distribution of X=# of bids won M= profit find the standard deviation of M

Which compound inequality could be represented by the graph?

What is the distance between point a and b

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.