Mark is solving the equation 4x^2 = 12x - 9 using the quadratic formula.
which values could he use for a, b and c?
a. a = 4, b = 9, c = -12
b. a = 4, b = -9, c = 12
c. a = 4, b = -12, c = 9
d. a = 4, b = 12, c = -9

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

Need now 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.