How many Dimes and Quarters Kyle has 37 coins in his pocket, all of which are dimes and quarters. If the total value of his change is
640 cents, how many dimes and how many quarters does he have?
Kyle has
dimes and
quarters in his
pocket.

Just tell me how to set up the equation.

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.

Tom drove 206 miles in 3.9 hours. estimate his average speed.