What’s answer number 16 part A? Let v_{1} = (2, - 6) and V_{2} = (- 4, 7)
a. Compute |v_{1}|and| * v_{2}|

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

Is it true or false i’m trying to pass this test so i can leave school

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.