An athletics coach states that the distribution of player run times (in seconds) for a 100-meter dash are normally distributed with a mean equal to 15.00 and a standard deviation equal to 0.2 seconds. what percentage of players on the team runs the 100-meter dash in faster than 15.30 seconds? (round your answer to two decimal places.)

Which of the following is the true for f(x) = 5cos

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.

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle