Given triangles abc and def, which statement explains a way to determine if the two figures are similar?

verify corresponding pairs of angles are congruent by translation.
verify corresponding pairs of sides are congruent by dilation.
verify corresponding pairs of angles are congruent by dilation.
verify corresponding pairs of sides are congruent by translation.

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Cor d? ? me ? 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.