4. From the top of a lighthouse, the angle of depression to a buoy is 20°. If the top of the lighthouse is 140 feet above sea level, find the distance from the buoy to the foot of the lighthouse.

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.

Graph the linear equation find three points on the graph -x+2y=11

When a number is decreased by 7%,the result is 74. what is the original number to the nearest tenth