A student solved a quadratic equation as shown here: 2x^2 + 5x = 12
x(2x + 5) = 12
x= 12or 2x + 5 = 12
x= 12or 2x + 5-5 = 12-5
x= 12or 2x = 7
x = 12or x = 7/2
x= 7/2,12

Explain the errors in the process. Then correct the errors, and solve the equation.

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.