AB is parallel to CD , and EF is perpendicular to AB. The number of 90° angles formed by the intersections of EF and the two parallel lines AB and CD is

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

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.

Suppose that 15 inches of wire cost 60 cents. at the same rate, how much (in cents) will 12 inches of wire cost