Let ABC be an isosceles triangle at A. Draw BH perpendicular to AC(H belongs to AC), draw CK perpendicular to AB(K belongs to AB). a, Prove AH=AK
b, Let I be the intersection of BH and CK. Prove that AI is orthogonal to HK.
c, Draw Bx perpendicular to AB at B, let E be the intersection of Bx with AC. Prove BC is the bisector of angle HBE.
d, Compare CH with CE

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.

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Will give a: 122 b: 90 c: 48 d: 180