Choose the expression that represents a quadratic expression.
a. 9x - 2
b. 5x^2 + 9x - 1
c. -2x^3 + 8x^2 - 7x + 1
d. x^4 - 12x^3 + 8x^2 - 7x + 1

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

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.

If two points are given,then exactly one line can be drawn through those two points.which geometry term does the statement represent