Choose the statement(s) which is (are) true of a normal distribution
I. it is symmetric about the mean
IL the shape of the graph of a normal distribution is
mound-shaped
II. 99.7% of the data is within 2 standard deviation of the
mean
A I only
C III only
® II only
O I and II only

Which of the following transformations will always produce a congruent figure?

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so

According to the national center for health statistics, in 1990, 28 % of babies in the united states were born to parents who were not married. throughout the 1990s, this increased by approximately 0.6 % per year. if this trend continues, in which year will 52 % of babies be born out of wedlock? in__52 % of babies will be born out of wedlock