Brad buys a pack of 12 bottles of energy drink for £9.25He then sells all 12 bottles for £1 each. Work out Brad's percentage profit

Needmax 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.

3x + 4y = 5 x- 3y = -7 solve by substitution

A10 inch cookie cake is divided into 8 slices. what is the area of 3 slices