Please help me, I will give brainliest, 5 stars and thanks to anyone that answers correctly :) This football pitch has an area of 7140m²

Show that 12x² - 13x - 7175 = 0

Please be sure to explain your answer, I'd like to understand how you got to the answer so that I'll be able to answer similar questions in the future :)

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.