A fair coin is tossed 80 times in an experiment. If the coin is fair, what would be a reasonable number of times tails should appear, based on your knowledge of the theoretical probability of this event? (Show your work!) a. 25 to 39 times
b. 33 to 47 times
c. 15 to 65 times
d. 42 to 58 times

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?

Will give brainliest b. describe the function over each part of its domain. state whether it is constant, increasing, or decreasing, and state the slope over each part.

After reading 80% of her e-mails in her inbox, danette still has m unread e-mails. which of the following expressions could represent the number of e-mails danette had in her inbox before she started reading? choose 2 answers: (choice a) 5m (choice b) 1.8m (choice c) 80m (choice d) m/0.8 (choice e) m/1−0.8