As Gamers progress through a video game they are in a higher rank in an online gaming Network Gamers can see what fraction of the way they are to the next rank the line plot displays the fraction of the way to the next rank for all the gamers in the network what fraction of Gamers have 7/8 of the way to the next rank

Me max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.