The vector wequals=aiplus+bj is perpendicular to the line axplus+byequals=c and parallel to the line bxminus−ayequals=c. it is also true that the acute angle between intersecting lines that do not cross at right angles is the same as the angle determined by vectors that are either normal to the lines or parallel to the lines. use this information to find the acute angle between the lines below. startroot 3 endroot3xminus−nothingyequals=22, nothingxminus−startroot 3 endroot3yequals=8

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.