After the fourth month of a 12-month loan:
the numerator is: {(n +__ ) + (n +__ ) + (n +__ ) + (n +__ )} =__ , and
the denominator is: {(n) + (n + 1) + ... + (n +__ )} =__ .
Therefore, the fraction is numerator/denominator (to the nearest tenth) =__ %.
Choices for each blank are:
8
42
10
9
78
11
53.8

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.

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.