Please help if you know the answers! Choose the equation and the slope of the line that passes through (4, -2) and
is perpendicular to the x-axis,
A. Equation; x = 4
B. Equation; x = -2
C. Slope undefined
D. Slope: 0
E. Equation: y = 4
F. Equation: y = -2

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

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.