Find the standard form of the equation of the parabola with a focus at (-4, 0) and a directrix at x = 4. y2 = -8x
16y = x2
y = negative one divided by sixteenx2
x = negative one divided by sixteeny2

In which form is the following function written? y = - 2(x – 3)(x + 5)

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

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.