The heights of 44 students (in centimetres) are presented in the frequency distribution below Complete the table and find the mean, median, and mode.
Height Frequency (f)
140 – 146 3
147 – 153 4
154 – 160 12
161 – 167 15
168 – 174 6
175 – 181 3
182 – 188 1

Aresearch group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. what is the population of the survey downtown shoppers downtown visitors downtown workers city residents

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?