Which of the following are true of a quadratic function whose discriminant is zero? (You may select more than one answer; to receive credit you must select all true statements)
A
A possible equation for the function is f(x) = x2 – 10x + 25.
A possible equation for the function is f(x) = x2 - 4x + 9.
B
С
The function has a double root.
D
The function has two, real, discrete roots.
E
The graph has no x-intercepts.

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

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.

Ametal rod is 2/5 meters long. it will be cut into pieces that are each 1/30 meters long. how many pieces will be made from the rod?